Subj : [1/2] Southern Ontario Weather To : All From : Northern Realms Date : Fri Aug 22 2025 15:35:00 FPCN11 CWTO 221930 Forecasts for Southern Ontario and the National Capital Region issued by Environment Canada at 3:30 p.m. EDT Friday 22 August 2025 for tonight Saturday and Saturday night. The next scheduled forecast will be issued at 5:00 a.m. EDT Saturday. City of Toronto. Tonight..Clear. Low 17. Saturday..A mix of sun and cloud. Wind becoming southwest 30 km/h gusting to 50 near noon. High 27. Humidex 33. UV index 8 or very high. Saturday night..Partly cloudy. 40 percent chance of showers late in the evening and overnight. Low 18. Windsor - Leamington - Essex County. Tonight..A few clouds. Fog patches developing after midnight. Low 16. Saturday..Sunny early in the morning then a mix of sun and cloud with 40 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Fog patches dissipating in the morning. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 26. Humidex 32. UV index 9 or very high. Saturday night..Partly cloudy with 40 percent chance of showers in the evening. Becoming clear overnight. Risk of a thunderstorm in the evening. Wind west 20 km/h becoming light in the evening. Low 15. Chatham-Kent - Rondeau Park. Tonight..Clear. Fog patches developing after midnight. Low 15. Saturday..A mix of sun and cloud. 40 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Fog patches dissipating in the morning. Wind becoming southwest 20 km/h gusting to 40 in the morning then northwest 30 gusting to 50 late in the afternoon. High 26. Humidex 32. UV index 9 or very high. Saturday night..Partly cloudy with 40 percent chance of showers in the evening. Becoming clear overnight. Risk of a thunderstorm in the evening. Wind southwest 20 km/h becoming light in the evening. Low 15. Sarnia - Petrolia - Western Lambton County. Tonight..A few clouds. Fog patches developing after midnight. Low 16. Saturday..Increasing cloudiness. 40 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Fog patches dissipating in the morning. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 26. Humidex 32. UV index 8 or very high. Saturday night..Mainly cloudy with 40 percent chance of showers in the evening and risk of a thunderstorm. Clearing overnight. Wind west 30 km/h becoming light after midnight. Low 15. Watford - Pinery Park - Eastern Lambton County. Tonight..Clear. Fog patches developing after midnight. Low 16. Saturday..A mix of sun and cloud. 40 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Fog patches dissipating in the morning. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 26. Humidex 32. UV index 8 or very high. Saturday night..Mainly cloudy with 40 percent chance of showers in the evening and risk of a thunderstorm. Clearing overnight. Wind southwest 20 km/h gusting to 40 becoming light after midnight. Low 15. Rodney - Shedden - Western Elgin County. Tonight..Clear. Fog patches developing after midnight. Low 16. Saturday..A mix of sun and cloud. 30 percent chance of showers in the afternoon. Fog patches dissipating in the morning. Wind becoming west 30 km/h gusting to 50 in the morning. High 27. Humidex 32. UV index 8 or very high. Saturday night..Partly cloudy. 40 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind southwest 20 km/h becoming light near midnight. Low 16. St. Thomas - Aylmer - Eastern Elgin County. Tonight..Clear. Becoming partly cloudy after midnight. Fog patches developing after midnight. Low 16. Saturday..A mix of sun and cloud. 30 percent chance of showers in the afternoon. Fog patches dissipating in the morning. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 27. Humidex 32. UV index 8 or very high. Saturday night..Partly cloudy. 40 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind southwest 20 km/h becoming light near midnight. Low 16. Strathroy - Komoka - Western Middlesex County. Tonight..Clear. Fog patches developing after midnight. Low 16. Saturday..A mix of sun and cloud. 30 percent chance of showers in the afternoon. Fog patches dissipating in the morning. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 26. Humidex 31. UV index 8 or very high. Saturday night..Partly cloudy. 40 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind west 30 km/h becoming light near midnight. Low 15. London - Parkhill - Eastern Middlesex County. Tonight..A few clouds. Fog patches developing after midnight. Low 16. Saturday..Mainly sunny. Increasing cloudiness in the morning then 30 percent chance of showers in the afternoon. Fog patches dissipating in the morning. Wind becoming west 30 km/h gusting to 50 in the morning. High 26. Humidex 31. UV index 8 or very high. Saturday night..Partly cloudy. 40 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind west 20 km/h becoming light near midnight. Low 15. Simcoe - Delhi - Norfolk. Tonight..Clear. Fog patches developing after midnight. Low 15. Saturday..A mix of sun and cloud. 30 percent chance of showers late in the afternoon. Fog patches dissipating in the morning. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 27. Humidex 33. UV index 8 or very high. Saturday night..Partly cloudy. 40 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind southwest 20 km/h becoming light near midnight. Low 16. Dunnville - Caledonia - Haldimand. Tonight..Clear. Fog patches developing after midnight. Low 14. Saturday..A mix of sun and cloud. 30 percent chance of showers late in the afternoon. Fog patches dissipating in the morning. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 27. Humidex 32. UV index 8 or very high. Saturday night..Partly cloudy. 40 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind southwest 20 km/h becoming light in the evening. Low 18. Woodstock - Tillsonburg - Oxford County. Tonight..A few clouds. Fog patches developing after midnight. Low 14. Saturday..A mix of sun and cloud. 30 percent chance of showers in the afternoon. Fog patches dissipating in the morning. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 28. Humidex 33. UV index 8 or very high. Saturday night..Partly cloudy. 40 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind southwest 20 km/h becoming light near midnight. Low 16. Brantford - County of Brant. Tonight..Clear. Fog patches developing after midnight. Low 14. Saturday..A mix of sun and cloud. 30 percent chance of showers late in the afternoon. Fog patches dissipating in the morning. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 28. Humidex 33. UV index 8 or very high. Saturday night..Partly cloudy. 40 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind southwest 20 km/h becoming light near midnight. Low 16. Niagara Falls - Welland - Southern Niagara Region. Tonight..Clear. Low 16. Saturday..A mix of sun and cloud. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 27. Humidex 34. UV index 8 or very high. Saturday night..Partly cloudy. 40 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind south 20 km/h becoming light near midnight. Low 18. St. Catharines - Grimsby - Northern Niagara Region. Tonight..Clear. Low 16. Saturday..A mix of sun and cloud. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 27. Humidex 34. UV index 8 or very high. Saturday night..Partly cloudy. 40 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind south 20 km/h becoming light near midnight. Low 18. City of Hamilton. Tonight..Clear. Low 14. Saturday..A mix of sun and cloud. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 27. Humidex 34. UV index 8 or very high. Saturday night..Partly cloudy. 40 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind southwest 20 km/h becoming light in the evening. Low 17. Burlington - Oakville. Tonight..Clear. Low 14. Saturday..A mix of sun and cloud. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 27. Humidex 33. UV index 8 or very high. Saturday night..Cloudy with 40 percent chance of showers in the evening and after midnight. Clearing before morning. Risk of a thunderstorm in the evening. Low 16. Halton Hills - Milton. Tonight..Clear. Low 14. Saturday..A mix of sun and cloud. Becoming cloudy in the afternoon. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 27. Humidex 33. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight. Clearing before morning. Low 16. Mississauga - Brampton. Tonight..Clear. Low 16. Saturday..Mainly sunny. Increasing cloudiness late in the morning. Wind becoming south 20 km/h gusting to 40 late in the morning. High 27. Humidex 33. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight. Clearing before morning. Low 16. Caledon. Tonight..Partly cloudy. Clearing this evening. Low 16. Saturday..Mainly sunny. Increasing cloudiness late in the morning then 30 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Wind southwest 30 km/h gusting to 50. High 27. Humidex 33. UV index 7 or high. Saturday night..Cloudy with 60 percent chance of showers in the evening and after midnight. Clearing before morning. Risk of a thunderstorm in the evening. Low 16. Vaughan - Richmond Hill - Markham. Tonight..Clear. Low 16. Saturday..A mix of sun and cloud. Wind becoming southwest 20 km/h gusting to 40 near noon. High 26. Humidex 33. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight. Clearing before morning. Low 15. Newmarket - Georgina - Northern York Region. Tonight..Partly cloudy. Clearing this evening. Low 16. Saturday..Mainly sunny. Increasing cloudiness late in the morning then 30 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 26. Humidex 33. UV index 8 or very high. Saturday night..Cloudy with 60 percent chance of showers in the evening and after midnight. Clearing before morning. Risk of a thunderstorm in the evening. Low 15. Pickering - Oshawa - Southern Durham Region. Tonight..Clearing early this evening. Low 17. Saturday..A mix of sun and cloud. Wind becoming south 30 km/h gusting to 50 near noon. High 26. Humidex 33. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight. Clearing before morning. Low 15. Uxbridge - Beaverton - Northern Durham Region. Tonight..Partly cloudy. Becoming clear this evening. Low 16. Saturday..Mainly sunny. Increasing cloudiness near noon then 30 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Wind becoming south 20 km/h gusting to 40 in the morning then light late in the afternoon. High 26. Humidex 33. UV index 8 or very high. Saturday night..Cloudy with 60 percent chance of showers in the evening and after midnight. Clearing before morning. Risk of a thunderstorm in the evening. Low 15. Goderich - Bluewater - Southern Huron County. Tonight..A few clouds. Wind becoming southwest 30 km/h late this evening. Low 16. Saturday..Mainly cloudy. 40 percent chance of showers in the afternoon with risk of a thunderstorm. Wind southwest 40 km/h gusting to 60. High 25. Humidex 31. UV index 7 or high. Saturday night..Cloudy with 40 percent chance of showers. Risk of a thunderstorm in the evening. Wind south 30 km/h becoming light after midnight. Low 17. Wingham - Blyth - Northern Huron County. Tonight..A few clouds. Low 16. Saturday..Mainly cloudy. 40 percent chance of showers in the afternoon with risk of a thunderstorm. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 25. Humidex 31. UV index 7 or high. Saturday night..Cloudy with 40 percent chance of showers. Risk of a thunderstorm in the evening. Wind southwest 20 km/h becoming light after midnight. Low 17. Stratford - Mitchell - Southern Perth County. Tonight..A few clouds. Low 16. Saturday..A mix of sun and cloud. Becoming cloudy near noon with 30 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 25. Humidex 31. UV index 7 or high. Saturday night..Cloudy with 60 percent chance of showers in the evening and after midnight. Clearing before morning. Risk of a thunderstorm in the evening. Wind southwest 20 km/h becoming light after midnight. Low 17. Listowel - Milverton - Northern Perth County. Tonight..A few clouds. Low 16. Saturday..Mainly cloudy. 30 percent chance of showers in the afternoon with risk of a thunderstorm. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 25. Humidex 31. UV index 7 or high. Saturday night..Cloudy with 60 percent chance of showers in the evening and after midnight. Clearing before morning. Risk of a thunderstorm in the evening. Wind southwest 20 km/h becoming light after midnight. Low 17. Kitchener - Cambridge - Region of Waterloo. Tonight..Clear. Low 14. Saturday..A mix of sun and cloud. Becoming cloudy near noon with 30 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 26. Humidex 31. UV index 8 or very high. Saturday night..Cloudy with 60 percent chance of showers in the evening and after midnight. Clearing before morning. Risk of a thunderstorm in the evening. Wind west 20 km/h becoming light near midnight. Low 16. Guelph - Erin - Southern Wellington County. Tonight..Clear. Low 14. Saturday..A mix of sun and cloud. Becoming cloudy near noon with 30 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 26. Humidex 31. UV index 8 or very high. Saturday night..Cloudy with 60 percent chance of showers in the evening and after midnight. Clearing before morning. Risk of a thunderstorm in the evening. Wind west 20 km/h becoming light near midnight. Low 16. Mount Forest - Arthur - Northern Wellington County. Tonight..A few clouds. Low 15. Saturday..Mainly cloudy. 30 percent chance of showers in the afternoon with risk of a thunderstorm. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 26. Humidex 31. UV index 8 or very high. Saturday night..Cloudy with 60 percent chance of showers in the evening and after midnight. Clearing before morning. Risk of a thunderstorm in the evening. Wind west 20 km/h becoming light near midnight. Low 16. Orangeville - Grand Valley - Southern Dufferin County. Tonight..Partly cloudy. Clearing this evening. Low 16. Saturday..Mainly sunny. Increasing cloudiness late in the morning then 30 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 25. Humidex 31. UV index 8 or very high. Saturday night..Mainly cloudy. 60 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Low 16. Shelburne - Mansfield - Northern Dufferin County. Tonight..Partly cloudy. Becoming clear this evening. Low 16. Saturday..A mix of sun and cloud. Becoming cloudy late in the morning with 30 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 27. Humidex 33. UV index 8 or very high. Saturday night..Mainly cloudy. 60 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Low 16. Innisfil - New Tecumseth - Angus. Tonight..Partly cloudy. Clearing this evening. Low 17. Saturday..Mainly sunny. Increasing cloudiness late in the morning then 30 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 27. Humidex 33. UV index 8 or very high. Saturday night..Mainly cloudy. 60 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Low 16. Saugeen Shores - Kincardine - Southern Bruce County. Tonight..Clear. Low 18 with temperature rising to 21 by morning. Saturday..Mainly cloudy. 60 percent chance of showers in the afternoon with risk of a thunderstorm. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 25. Humidex 30. UV index 6 or high. Saturday night..Cloudy with 60 percent chance of showers. Risk of a thunderstorm in the evening. Wind southwest 30 km/h becoming northwest 20 after midnight. Low 14. Bruce Peninsula - Sauble Beach - Tobermory. Tonight..Increasing cloudiness early this evening. Wind west 20 km/h becoming light this evening. Wind becoming south 20 gusting to 40 overnight. Low 18. Saturday..Mainly cloudy. 60 percent chance of showers in the afternoon with risk of a thunderstorm. Wind southwest 20 km/h gusting to 40. High 25. Humidex 30. UV index 6 or high. Saturday night..Cloudy with 60 percent chance of showers. Risk of a thunderstorm in the evening. Wind southwest 30 km/h becoming northwest 20 after midnight. Low 14. Hanover - Dundalk - Southern Grey County. Tonight..A few clouds. Low 16. Saturday..Mainly cloudy. 60 percent chance of showers in the afternoon with risk of a thunderstorm. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 25. Humidex 30. UV index 7 or high. Saturday night..Cloudy with 60 percent chance of showers. Risk of a thunderstorm in the evening. Wind west 20 km/h. Low 14. Owen Sound - Blue Mountains - Northern Grey County. Tonight..Clear. Becoming partly cloudy this evening. Wind west 20 km/h becoming light this evening. Low 18. Saturday..Mainly cloudy. 60 percent chance of showers in the afternoon with risk of a thunderstorm. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 25. Humidex 30. UV index 7 or high. Saturday night..Cloudy with 60 percent chance of showers. Risk of a thunderstorm in the evening. Wind west 20 km/h. Low 14. Barrie - Collingwood - Hillsdale. Tonight..Mainly cloudy. Clearing this evening. Low 17. Saturday..Mainly sunny. Increasing cloudiness in the morning then 30 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 26. Humidex 31. UV index 8 or very high. Saturday night..Cloudy. 60 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind west 20 km/h becoming light near midnight. Low 16. Midland - Coldwater - Orr Lake. Tonight..Partly cloudy. Low 17. Saturday..Mainly cloudy. 40 percent chance of showers in the afternoon with risk of a thunderstorm. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 26. Humidex 31. UV index 7 or high. Saturday night..Cloudy. 60 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind west 20 km/h becoming light near midnight. Low 16. Orillia - Lagoon City - Washago. Tonight..Mainly cloudy. Clearing this evening. Wind becoming south 30 km/h this evening. Low 20. Saturday..Mainly sunny. Increasing cloudiness late in the morning then 40 percent chance of showers in the afternoon. Risk of a thunderstorm in the afternoon. Wind southwest 40 km/h gusting to 60. High 26. Humidex 31. UV index 8 or very high. Saturday night..Cloudy. 60 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Wind west 20 km/h becoming light near midnight. Low 16. Cobourg - Colborne - Western Northumberland County. Tonight..Clear. Low 15. Saturday..Sunny. Becoming a mix of sun and cloud late in the morning. Wind becoming southwest 30 km/h in the morning. High 27. Humidex 34. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Wind becoming southwest 30 km/h near midnight. Low 18. Belleville - Quinte West - Eastern Northumberland County. Tonight..Clear. Low 15. Saturday..Sunny. Becoming a mix of sun and cloud late in the morning. Wind becoming southwest 30 km/h in the morning. High 27. Humidex 34. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Wind becoming southwest 30 km/h near midnight. Low 18. Picton - Sandbanks Park. Tonight..Clear. Low 15. Saturday..Sunny. Becoming a mix of sun and cloud late in the morning. Wind becoming southwest 30 km/h in the morning. High 27. Humidex 34. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Wind southwest 30 km/h becoming light after midnight. Low 18. Napanee - Consecon. Tonight..Clear. Low 15. Saturday..Sunny. Becoming a mix of sun and cloud late in the morning. Wind becoming southwest 30 km/h in the morning. High 27. Humidex 34. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Wind southwest 30 km/h becoming light after midnight. Low 18. Kingston - Odessa - Frontenac Islands. Tonight..Clear. Wind south 20 km/h becoming light this evening. Low 17. Saturday..Sunny. Increasing cloudiness early in the afternoon. Wind south 20 km/h gusting to 40. High 27. Humidex 34. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Wind southwest 30 km/h becoming light after midnight. Low 18. Lindsay - Southern Kawartha Lakes. Tonight..A few clouds. Low 15. Saturday..A mix of sun and cloud. 30 percent chance of showers in the afternoon with risk of a thunderstorm. Wind south 20 km/h becoming west 30 late in the afternoon. High 25. Humidex 30. UV index 8 or very high. Saturday night..Cloudy with 60 percent chance of showers in the evening and after midnight. Clearing before morning. Risk of a thunderstorm in the evening. Low 17. Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes. Tonight..Partly cloudy. Low 15. Saturday..Mainly sunny. Increasing cloudiness in the afternoon then 30 percent chance of showers later in the afternoon. Risk of a thunderstorm in the afternoon. Wind becoming south 20 km/h gusting to 40 in the morning. High 25. Humidex 30. UV index 8 or very high. Saturday night..Mainly cloudy with 60 percent chance of showers and risk of a thunderstorm. Wind southwest 30 km/h becoming light in the evening. Low 17. Peterborough City - Lakefield - Southern Peterborough County. Tonight..A few clouds. Low 14. Saturday..A mix of sun and cloud. 30 percent chance of showers in the afternoon with risk of a thunderstorm. Wind becoming south 30 km/h gusting to 50 in the morning. High 26. Humidex 31. UV index 8 or very high. Saturday night..Cloudy. 60 percent chance of showers in the evening and after midnight. Risk of a thunderstorm in the evening. Low 15. Apsley - Woodview - Northern Peterborough County. Tonight..Partly cloudy. Low 13. Saturday..A mix of sun and cloud. 30 percent chance of showers in the afternoon with risk of a thunderstorm. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 26. Humidex 31. UV index 8 or very high. Saturday night..Cloudy with 60 percent chance of showers and risk of a thunderstorm. Low 15. Stirling - Tweed - Madoc. Tonight..A few clouds. Low 15. Saturday..A mix of sun and cloud. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 26. Humidex 31. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Low 18. Tamworth - Sydenham - South Frontenac. Tonight..Clear. Low 15. Saturday..Sunny. Increasing cloudiness early in the afternoon. Wind becoming south 20 km/h gusting to 40 in the morning. High 26. Humidex 31. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Low 18. Kaladar - Bannockburn - Bon Echo Park. Tonight..Clearing. Low 14. Saturday..A mix of sun and cloud. 30 percent chance of showers late in the afternoon. Wind becoming south 30 km/h gusting to 50 in the morning. High 26. Humidex 31. UV index 8 or very high. Saturday night..Cloudy with 60 percent chance of showers and risk of a thunderstorm. Low 16. Bancroft - Hastings Highlands - Denbigh. Tonight..Partly cloudy. Low 13. Saturday..A mix of sun and cloud. 30 percent chance of showers late in the afternoon. Wind becoming southwest 30 km/h gusting to 60 in the morning. High 26. Humidex 31. UV index 8 or very high. Saturday night..Cloudy with 60 percent chance of showers and risk of a thunderstorm. Low 16. Gananoque - Mallorytown. Tonight..Clear. Low 16. Saturday..Sunny. Increasing cloudiness in the afternoon. Wind becoming south 20 km/h gusting to 40 in the morning. High 27. Humidex 32. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Low 18. Brockville - Prescott. Tonight..Clear. Low 16. Saturday..Sunny. Increasing cloudiness in the afternoon. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 27. Humidex 32. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Wind southwest 20 km/h becoming light in the evening. Low 18. Westport - Charleston Lake. Tonight..Partly cloudy. Becoming clear this evening. Low 16. Saturday..Mainly sunny. Wind south 20 km/h gusting to 40. High 27. Humidex 32. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Low 18. Merrickville-Wolford - Kemptville. Tonight..A few clouds. Low 16. Saturday..Sunny. Becoming a mix of sun and cloud in the afternoon. Wind becoming south 30 km/h gusting to 50 in the morning. High 27. Humidex 32. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Low 18. Ottawa North - Kanata - Orleans. Tonight..A few clouds. Low 16. Saturday..Sunny. Becoming a mix of sun and cloud in the afternoon. Wind becoming south 30 km/h gusting to 50 in the morning. High 29. Humidex 34. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Wind south 20 km/h. Low 17. Ottawa South - Richmond - Metcalfe. Tonight..A few clouds. Low 16. Saturday..Sunny. Becoming a mix of sun and cloud in the afternoon. Wind becoming south 30 km/h gusting to 50 in the morning. High 28. Humidex 33. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Wind south 20 km/h. Low 17. Gatineau. Tonight..Partly cloudy. Low 16. Saturday..Mainly sunny. Wind becoming south 30 km/h gusting to 50 early in the afternoon. High 29. Humidex 34. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Wind becoming south 20 km/h after midnight. Low 18. Prescott and Russell. Tonight..A few clouds. Low 16. Saturday..Sunny. Becoming a mix of sun and cloud late in the afternoon. Wind becoming south 30 km/h gusting to 50 in the morning. High 29. Humidex 31. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Wind south 20 km/h. Low 19. Morrisburg - Long Sault. Tonight..Clear. Low 17. Saturday..Sunny. Becoming a mix of sun and cloud in the afternoon. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 28. Humidex 33. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Wind southwest 20 km/h becoming light in the evening. Low 18. Cornwall - Lancaster. Tonight..Clear. Low 17. Saturday..Sunny. Becoming a mix of sun and cloud in the afternoon. Wind becoming southwest 30 km/h gusting to 50 late in the morning. High 28. Humidex 33. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Wind southwest 30 km/h becoming light after midnight. Low 18. Winchester - Newington. Tonight..Clear. Low 17. Saturday..Sunny. Becoming a mix of sun and cloud in the afternoon. Wind becoming south 30 km/h gusting to 60 in the morning. High 28. Humidex 33. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Low 18. Maxville - Alexandria. Tonight..A few clouds. Low 16. Saturday..Sunny. Becoming a mix of sun and cloud late in the afternoon. Wind becoming south 20 km/h gusting to 60 in the morning. High 29. Humidex 34. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Low 18. Plevna - Sharbot Lake - Western Lanark County. Tonight..Clearing early this evening. Low 16. Saturday..A mix of sun and cloud. 30 percent chance of showers late in the afternoon. Wind becoming south 30 km/h gusting to 50 in the morning. High 27. Humidex 31. UV index 8 or very high. Saturday night..Cloudy with 60 percent chance of showers and risk of a thunderstorm. Low 18. Smiths Falls - Perth - Eastern Lanark County. Tonight..Partly cloudy. Clearing late this evening. Low 17. Saturday..Sunny. Becoming a mix of sun and cloud in the afternoon. Wind becoming south 30 km/h gusting to 50 in the morning. High 27. Humidex 31. UV index 8 or very high. Saturday night..Cloudy. 40 percent chance of showers late in the evening and overnight with risk of a thunderstorm. Low 18. Continued in next message... --- up 1 day, 11 hours, 57 minutes * Origin: Northern Realms (618:400/23) .