Subj : Southern Ontario Weather To : All From : Northern Realms Date : Wed Aug 20 2025 15:35:02 FPCN11 CWTO 201930 Forecasts for Southern Ontario and the National Capital Region issued by Environment Canada at 3:30 p.m. EDT Wednesday 20 August 2025 for tonight Thursday and Thursday night. The next scheduled forecast will be issued at 5:00 a.m. EDT Thursday. City of Toronto. Tonight..Cloudy. 30 percent chance of showers early this evening. Wind northeast 20 km/h gusting to 40. Low 16. Thursday..Clearing in the morning. Wind east 20 km/h gusting to 40 becoming light in the afternoon. High 24. Humidex 29. UV index 8 or very high. Thursday night..Clear. Low 15. Windsor - Leamington - Essex County. Tonight..Cloudy. 30 percent chance of showers this evening. Wind north 30 km/h becoming light late this evening. Wind becoming northeast 20 before morning. Low 15. Thursday..Mainly cloudy. Wind northeast 20 km/h becoming light in the afternoon. High 25. Humidex 33. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 13. Chatham-Kent - Rondeau Park. Tonight..Cloudy. 30 percent chance of showers this evening. Wind northeast 20 km/h becoming light this evening. Low 15. Thursday..Mainly cloudy. Wind northeast 20 km/h becoming light in the afternoon. High 25. Humidex 33. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 13. Sarnia - Petrolia - Western Lambton County. Tonight..Cloudy. 30 percent chance of showers this evening. Wind north 20 km/h gusting to 40 becoming light late this evening. Wind becoming northeast 20 before morning. Low 15. Thursday..Mainly cloudy. Wind north 30 km/h. High 26. Humidex 32. UV index 8 or very high. Thursday night..Clear. Fog patches developing in the evening. Wind north 30 km/h becoming light in the evening. Low 13. Watford - Pinery Park - Eastern Lambton County. Tonight..Cloudy. 30 percent chance of showers this evening. Wind northeast 20 km/h gusting to 40 becoming light after midnight. Wind becoming northeast 20 before morning. Low 15. Thursday..Mainly cloudy. Wind northeast 20 km/h gusting to 40. High 26. Humidex 32. UV index 8 or very high. Thursday night..Clear. Fog patches developing in the evening. Wind northeast 20 km/h becoming light in the evening. Low 13. Rodney - Shedden - Western Elgin County. Tonight..Cloudy. 30 percent chance of showers this evening. Low 17. Thursday..Mainly cloudy. Wind northeast 20 km/h becoming light late in the morning. High 24. Humidex 30. UV index 8 or very high. Thursday night..Clear. Fog patches developing in the evening. Low 12. St. Thomas - Aylmer - Eastern Elgin County. Tonight..Cloudy. 30 percent chance of showers this evening. Wind northeast 20 km/h becoming light this evening. Low 17. Thursday..Mainly cloudy. Wind becoming northeast 20 km/h gusting to 40 in the morning. High 24. Humidex 30. UV index 8 or very high. Thursday night..Clear. Fog patches developing in the evening. Low 12. Strathroy - Komoka - Western Middlesex County. Tonight..Cloudy. 30 percent chance of showers this evening. Low 15. Thursday..Mainly cloudy. Wind northeast 20 km/h becoming light in the afternoon. High 26. Humidex 31. UV index 8 or very high. Thursday night..Clear. Fog patches developing in the evening. Low 13. London - Parkhill - Eastern Middlesex County. Tonight..Cloudy. 30 percent chance of showers this evening. Wind northeast 20 km/h. Low 15. Thursday..Mainly cloudy. Wind northeast 20 km/h becoming light in the afternoon. High 26. Humidex 31. UV index 8 or very high. Thursday night..Clear. Fog patches developing in the evening. Low 13. Simcoe - Delhi - Norfolk. Tonight..Cloudy with 30 percent chance of showers or drizzle. Wind northeast 20 km/h becoming light after midnight. Low 16. Thursday..Cloudy. 30 percent chance of showers or drizzle in the morning. Becoming a mix of sun and cloud in the afternoon. Wind becoming northeast 20 km/h gusting to 40 in the morning. High 25. Humidex 29. UV index 7 or high. Thursday night..Clear. Fog patches developing in the evening. Wind northeast 20 km/h becoming light in the evening. Low 11. Dunnville - Caledonia - Haldimand. Tonight..Cloudy with 30 percent chance of showers or drizzle. Wind northeast 20 km/h gusting to 40 becoming light late this evening. Wind becoming northeast 20 after midnight. Low 18. Thursday..Cloudy. 30 percent chance of showers or drizzle in the morning. Becoming a mix of sun and cloud in the afternoon. Wind northeast 20 km/h gusting to 40. High 24. Humidex 29. UV index 7 or high. Thursday night..Clear. Fog patches developing in the evening. Wind northeast 20 km/h becoming light in the evening. Low 11. Woodstock - Tillsonburg - Oxford County. Tonight..Cloudy with 30 percent chance of showers or drizzle. Wind northeast 20 km/h. Low 16. Thursday..Cloudy. 30 percent chance of showers or drizzle in the morning. Becoming a mix of sun and cloud in the afternoon. Wind becoming northeast 20 km/h gusting to 40 in the morning. High 24. Humidex 28. UV index 7 or high. Thursday night..Clear. Fog patches developing in the evening. Low 11. Brantford - County of Brant. Tonight..Cloudy with 30 percent chance of showers or drizzle. Wind northeast 20 km/h gusting to 40. Low 16. Thursday..Cloudy. 30 percent chance of showers or drizzle in the morning. Becoming a mix of sun and cloud in the afternoon. Wind becoming northeast 20 km/h gusting to 40 in the morning. High 24. Humidex 28. UV index 7 or high. Thursday night..Clear. Fog patches developing in the evening. Wind northeast 20 km/h becoming light in the evening. Low 11. Niagara Falls - Welland - Southern Niagara Region. Tonight..Cloudy with 60 percent chance of showers or drizzle. Wind northeast 20 km/h. Low 16. Thursday..Cloudy. 30 percent chance of showers or drizzle in the morning. Becoming a mix of sun and cloud in the afternoon. Wind northeast 20 km/h gusting to 40. High 24. Humidex 29. UV index 7 or high. Thursday night..Clear. Wind northeast 20 km/h becoming light in the evening. Low 14. St. Catharines - Grimsby - Northern Niagara Region. Tonight..Cloudy with 60 percent chance of showers or drizzle. Wind east 20 km/h gusting to 40 becoming light after midnight. Low 16. Thursday..Cloudy. 30 percent chance of showers or drizzle in the morning. Becoming a mix of sun and cloud in the afternoon. Wind becoming northeast 20 km/h gusting to 40 in the morning. High 24. Humidex 29. UV index 7 or high. Thursday night..Clear. Low 14. City of Hamilton. Tonight..Cloudy with 60 percent chance of showers or drizzle. Wind northeast 20 km/h gusting to 40. Low 16. Thursday..Cloudy. 30 percent chance of showers or drizzle in the morning. Becoming a mix of sun and cloud in the afternoon. Wind northeast 20 km/h gusting to 40. High 23. Humidex 28. UV index 7 or high. Thursday night..Clear. Wind northeast 20 km/h becoming light in the evening. Low 13. Burlington - Oakville. Tonight..Cloudy. 30 percent chance of showers early this evening. Wind northeast 20 km/h gusting to 40. Low 16. Thursday..Clearing in the morning. Wind northeast 20 km/h gusting to 40. High 24. Humidex 29. UV index 8 or very high. Thursday night..Clear. Low 14. Halton Hills - Milton. Tonight..Cloudy. 30 percent chance of showers early this evening. Wind northeast 20 km/h becoming light this evening. Low 16. Thursday..Clearing in the morning. Wind east 20 km/h becoming light in the afternoon. High 24. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Low 14. Mississauga - Brampton. Tonight..Cloudy. 30 percent chance of showers early this evening. Wind northeast 20 km/h gusting to 40 becoming light late this evening. Low 16. Thursday..Clearing in the morning. Wind east 20 km/h becoming light in the afternoon. High 24. Humidex 29. UV index 8 or very high. Thursday night..Partly cloudy. Becoming clear in the evening. Low 14. Caledon. Tonight..Cloudy. 30 percent chance of showers this evening. Low 15. Thursday..Clearing in the morning. Wind east 20 km/h becoming light in the afternoon. High 24. Humidex 29. UV index 9 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 14. Vaughan - Richmond Hill - Markham. Tonight..Cloudy. 30 percent chance of showers early this evening. Wind northeast 20 km/h becoming light late this evening. Temperature steady near 16. Thursday..Clearing in the morning. Wind east 20 km/h becoming light in the afternoon. High 25. Humidex 30. UV index 9 or very high. Thursday night..Partly cloudy. Becoming clear in the evening. Low 12. Newmarket - Georgina - Northern York Region. Tonight..Cloudy with 30 percent chance of showers this evening then partly cloudy. Wind east 20 km/h becoming light early this evening. Low 15. Thursday..Clearing in the morning. Wind east 20 km/h becoming light late in the morning. High 26. Humidex 31. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Pickering - Oshawa - Southern Durham Region. Tonight..Cloudy. 30 percent chance of showers early this evening. Wind east 20 km/h gusting to 40 becoming light this evening. Low 16. Thursday..Clearing in the morning. Wind east 20 km/h becoming light in the afternoon. High 24. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Low 12. Uxbridge - Beaverton - Northern Durham Region. Tonight..Cloudy. 30 percent chance of showers early this evening. Becoming partly cloudy near midnight. Wind northeast 20 km/h becoming light this evening. Low 15. Thursday..Mainly sunny. Wind east 20 km/h becoming light in the afternoon. High 25. Humidex 30. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Goderich - Bluewater - Southern Huron County. Tonight..Mainly cloudy. 30 percent chance of showers this evening. Wind northeast 30 km/h becoming light this evening. Low 13. Thursday..Clearing in the morning. Wind east 20 km/h becoming northwest 20 in the afternoon. High 26. Humidex 31. UV index 8 or very high. Thursday night..Partly cloudy. Becoming clear in the evening. Wind north 20 km/h becoming light in the evening. Low 12. Wingham - Blyth - Northern Huron County. Tonight..Mainly cloudy. 30 percent chance of showers this evening. Low 13. Thursday..Clearing in the morning. Wind east 20 km/h becoming light in the afternoon. High 26. Humidex 31. UV index 8 or very high. Thursday night..Clearing in the evening. Low 12. Stratford - Mitchell - Southern Perth County. Tonight..Cloudy. 30 percent chance of showers this evening. Wind northeast 20 km/h becoming light late this evening. Low 13. Thursday..Clearing in the morning. Wind becoming east 20 km/h gusting to 40 in the morning then light in the afternoon. High 26. Humidex 31. UV index 8 or very high. Thursday night..Partly cloudy. Becoming clear in the evening. Fog patches developing in the evening. Low 12. Listowel - Milverton - Northern Perth County. Tonight..Cloudy. 30 percent chance of showers this evening. Low 13. Thursday..Clearing in the morning. Wind becoming east 20 km/h gusting to 40 in the morning then light in the afternoon. High 26. Humidex 31. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Kitchener - Cambridge - Region of Waterloo. Tonight..Cloudy. 30 percent chance of showers this evening. Wind northeast 20 km/h becoming light late this evening. Low 15. Thursday..Clearing in the morning. Wind becoming east 20 km/h gusting to 40 in the morning. High 24. Humidex 28. UV index 9 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Guelph - Erin - Southern Wellington County. Tonight..Cloudy. 30 percent chance of showers this evening. Wind northeast 20 km/h. Low 15. Thursday..Clearing in the morning. Wind east 20 km/h gusting to 40. High 24. Humidex 28. UV index 9 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Mount Forest - Arthur - Northern Wellington County. Tonight..Cloudy. 30 percent chance of showers this evening. Low 14. Thursday..Clearing in the morning. Wind east 20 km/h becoming light in the afternoon. High 25. Humidex 30. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Orangeville - Grand Valley - Southern Dufferin County. Tonight..Cloudy. 30 percent chance of showers this evening. Low 14. Thursday..Clearing in the morning. Wind east 20 km/h becoming light in the afternoon. High 25. Humidex 30. UV index 9 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Shelburne - Mansfield - Northern Dufferin County. Tonight..Cloudy. 30 percent chance of showers this evening. Low 14. Thursday..Clearing in the morning. Wind east 20 km/h becoming light in the afternoon. High 25. Humidex 30. UV index 9 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Innisfil - New Tecumseth - Angus. Tonight..Cloudy. 30 percent chance of showers this evening. Low 14. Thursday..Clearing in the morning. Wind east 20 km/h becoming light late in the morning. High 25. Humidex 30. UV index 9 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Saugeen Shores - Kincardine - Southern Bruce County. Tonight..Cloudy. Becoming partly cloudy near midnight. Low 14. Thursday..Clearing in the morning. Wind east 20 km/h becoming light late in the morning. High 26. Humidex 32. UV index 8 or very high. Thursday night..Clear. Fog patches developing in the evening. Low 12. Bruce Peninsula - Sauble Beach - Tobermory. Tonight..Mainly cloudy. Low 15. Thursday..Clearing in the morning. High 24. Humidex 29. UV index 8 or very high. Thursday night..Clear. Low 12. Hanover - Dundalk - Southern Grey County. Tonight..Cloudy. Low 14. Thursday..Clearing in the morning. Wind east 20 km/h becoming light in the afternoon. High 25. Humidex 30. UV index 8 or very high. Thursday night..Partly cloudy. Becoming clear in the evening. Fog patches developing in the evening. Low 12. Owen Sound - Blue Mountains - Northern Grey County. Tonight..Cloudy. Wind east 20 km/h becoming light early this evening. Low 14. Thursday..Clearing in the morning. High 25. Humidex 30. UV index 8 or very high. Thursday night..Clear. Fog patches developing in the evening. Low 12. Barrie - Collingwood - Hillsdale. Tonight..Cloudy with 30 percent chance of showers this evening then partly cloudy. Wind east 20 km/h becoming light early this evening. Low 14. Thursday..Clearing in the morning. High 25. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Midland - Coldwater - Orr Lake. Tonight..Cloudy. 30 percent chance of showers early this evening. Becoming partly cloudy near midnight. Fog patches developing near midnight. Low 14. Thursday..Clearing in the morning. Fog patches dissipating in the morning. High 25. Humidex 29. UV index 8 or very high. Thursday night..Partly cloudy. Becoming clear in the evening. Fog patches developing in the evening. Low 12. Orillia - Lagoon City - Washago. Tonight..Cloudy. 30 percent chance of showers early this evening. Becoming partly cloudy near midnight. Fog patches developing near midnight. Wind east 30 km/h becoming light early this evening. Low 14. Thursday..Clearing in the morning. Fog patches dissipating in the morning. High 22. Humidex 28. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Cobourg - Colborne - Western Northumberland County. Tonight..Mainly cloudy. 40 percent chance of showers early this evening. Wind east 20 km/h becoming light this evening. Low 14. Thursday..Mainly sunny. High 26. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Low 13. Belleville - Quinte West - Eastern Northumberland County. Tonight..Mainly cloudy. 40 percent chance of showers early this evening. Wind east 20 km/h becoming light this evening. Low 14. Thursday..Mainly sunny. High 26. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Low 13. Picton - Sandbanks Park. Tonight..Mainly cloudy. 40 percent chance of showers early this evening. Wind east 20 km/h becoming light this evening. Low 14. Thursday..Mainly sunny. High 26. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Low 12. Napanee - Consecon. Tonight..Mainly cloudy. 40 percent chance of showers early this evening. Wind east 20 km/h becoming light this evening. Low 14. Thursday..Mainly sunny. High 26. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Low 12. Kingston - Odessa - Frontenac Islands. Tonight..Clearing late this evening. Low 13. Thursday..Mainly sunny. Wind becoming northeast 20 km/h late in the morning. High 26. Humidex 28. UV index 8 or very high. Thursday night..Clear. Low 12. Lindsay - Southern Kawartha Lakes. Tonight..Cloudy with 30 percent chance of showers early this evening then partly cloudy. Wind east 20 km/h becoming light this evening. Low 13. Thursday..Mainly sunny. Wind east 20 km/h becoming light in the afternoon. High 26. Humidex 31. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 10. Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes. Tonight..Mainly cloudy. 30 percent chance of showers early this evening. Fog patches developing near midnight. Wind east 20 km/h becoming light early this evening. Low 13. Thursday..Mainly sunny. Fog patches dissipating in the morning. Wind becoming east 20 km/h late in the morning. High 25. Humidex 28. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 10. Peterborough City - Lakefield - Southern Peterborough County. Tonight..Mainly cloudy. 30 percent chance of showers early this evening. Wind east 20 km/h becoming light early this evening. Low 12. Thursday..Mainly sunny. Wind becoming east 20 km/h late in the morning. High 26. Humidex 31. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 10. Apsley - Woodview - Northern Peterborough County. Tonight..Mainly cloudy. 30 percent chance of showers early this evening. Fog patches developing near midnight. Low 11. Thursday..Mainly sunny. Fog patches dissipating in the morning. High 26. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 10. Stirling - Tweed - Madoc. Tonight..Cloudy. Becoming partly cloudy this evening. Low 11. Thursday..Mainly sunny. Wind east 20 km/h becoming light in the afternoon. High 26. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Low 12. Tamworth - Sydenham - South Frontenac. Tonight..Clearing late this evening. Low 11. Thursday..Mainly sunny. Wind becoming northeast 20 km/h in the afternoon. High 26. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Low 12. Kaladar - Bannockburn - Bon Echo Park. Tonight..Mainly cloudy. 40 percent chance of showers early this evening. Fog patches developing near midnight. Low 10. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 26. Humidex 28. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 9. Bancroft - Hastings Highlands - Denbigh. Tonight..Mainly cloudy. 40 percent chance of showers early this evening. Fog patches developing near midnight. Low 10. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 26. Humidex 28. UV index 8 or very high. Thursday night..Partly cloudy. Becoming clear in the evening. Fog patches developing in the evening. Low 9. Gananoque - Mallorytown. Tonight..Partly cloudy. Low 12. Thursday..Mainly sunny. Wind becoming northeast 20 km/h in the afternoon. High 27. Humidex 28. UV index 8 or very high. Thursday night..Clear. Low 11. Brockville - Prescott. Tonight..Partly cloudy. Low 12. Thursday..Mainly sunny. Wind becoming northeast 20 km/h late in the morning. High 27. Humidex 28. UV index 8 or very high. Thursday night..Clear. Low 11. Westport - Charleston Lake. Tonight..Partly cloudy. Low 12. Thursday..Mainly sunny. High 27. Humidex 28. UV index 8 or very high. Thursday night..Clearing in the evening. Low 11. Merrickville-Wolford - Kemptville. Tonight..Partly cloudy. Low 12. Thursday..Mainly sunny. High 27. Humidex 28. UV index 8 or very high. Thursday night..Partly cloudy. Becoming clear in the evening. Low 11. Ottawa North - Kanata - Orleans. Tonight..Partly cloudy. Low 13. Thursday..Mainly sunny. High 28. Humidex 31. UV index 8 or very high. Thursday night..Clearing in the evening. Low 13. Ottawa South - Richmond - Metcalfe. Tonight..Partly cloudy. Low 13. Thursday..Mainly sunny. High 28. Humidex 31. UV index 8 or very high. Thursday night..Clearing in the evening. Low 13. Gatineau. Tonight..Partly cloudy. Low 12. Thursday..Mainly sunny. High 28. Humidex 31. UV index 8 or very high. Thursday night..Partly cloudy. Becoming clear in the evening. Low 13. Prescott and Russell. Tonight..Partly cloudy. Low 12. Thursday..Mainly sunny. High 28. Humidex 30. UV index 8 or very high. Thursday night..Clear. Low 12. Morrisburg - Long Sault. Tonight..Partly cloudy. Low 12. Thursday..Mainly sunny. High 27. Humidex 30. UV index 8 or very high. Thursday night..Clear. Low 11. Cornwall - Lancaster. Tonight..Partly cloudy. Low 12. Thursday..Mainly sunny. High 27. Humidex 30. UV index 8 or very high. Thursday night..Clear. Low 11. Winchester - Newington. Tonight..Partly cloudy. Low 12. Thursday..Mainly sunny. High 27. Humidex 30. UV index 8 or very high. Thursday night..Clear. Low 11. Maxville - Alexandria. Tonight..Partly cloudy. Low 11. Thursday..Mainly sunny. High 27. Humidex 30. UV index 8 or very high. Thursday night..Clear. Low 11. Plevna - Sharbot Lake - Western Lanark County. Tonight..Mainly cloudy. 40 percent chance of showers early this evening. Fog patches developing near midnight. Low 12. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 26. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Smiths Falls - Perth - Eastern Lanark County. Tonight..Cloudy. Becoming partly cloudy this evening. Low 13. Thursday..Mainly sunny. High 27. Humidex 30. UV index 8 or very high. Thursday night..Clearing in the evening. Low 12. Port Carling - Port Severn. Tonight..Cloudy. 30 percent chance of showers early this evening. Becoming partly cloudy near midnight. Fog patches developing near midnight. Low 10. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 27. Humidex 31. UV index 8 or very high. Thursday night..Partly cloudy. Becoming clear in the evening. Fog patches developing in the evening. Low 15. Bracebridge - Gravenhurst. Tonight..Cloudy. 30 percent chance of showers early this evening. Becoming partly cloudy near midnight. Fog patches developing near midnight. Low 10. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 27. Humidex 31. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 10. Town of Parry Sound - Rosseau - Killbear Park. Tonight..Cloudy with 30 percent chance of showers early this evening then partly cloudy. Fog patches developing near midnight. Low 13. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 25. Humidex 30. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Huntsville - Baysville. Tonight..Cloudy with 30 percent chance of showers early this evening. Clearing near midnight. Fog patches developing near midnight. Low 13. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 25. Humidex 30. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Haliburton - Minden - Southern Haliburton County. Tonight..Mainly cloudy. 30 percent chance of showers early this evening. Fog patches developing near midnight. Low 12. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 25. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 11. Oxtongue Lake - Fort Irwin - Northern Haliburton County. Tonight..Mainly cloudy. 30 percent chance of showers early this evening. Fog patches developing near midnight. Low 12. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 25. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 11. Barry's Bay - Killaloe. Tonight..Mainly cloudy. 40 percent chance of showers early this evening. Fog patches developing near midnight. Low 13. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 26. Humidex 29. UV index 8 or very high. Thursday night..Clearing in the evening. Fog patches developing in the evening. Low 12. Renfrew - Arnprior - Calabogie. Tonight..Mainly cloudy. 40 percent chance of showers early this evening. Fog patches developing near midnight. Low 13. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 26. Humidex 29. UV index 8 or very high. Thursday night..Clear. Fog patches developing in the evening. Low 12. Petawawa - Pembroke - Cobden. Tonight..Mainly cloudy. 40 percent chance of showers early this evening. Fog patches developing near midnight. Low 13. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 26. Humidex 29. UV index 8 or very high. Thursday night..Clear. Fog patches developing in the evening. Low 12. Western Algonquin Park - Lake of Two Rivers. Tonight..Cloudy. Becoming partly cloudy this evening. Fog patches developing near midnight. Low 10. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 25. Humidex 28. UV index 8 or very high. Thursday night..Clearing in the evening. Low 9. Deep River - Whitney - Eastern Algonquin Park. Tonight..Cloudy. Becoming partly cloudy this evening. Fog patches developing near midnight. Low 10. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 25. Humidex 28. UV index 8 or very high. Thursday night..Clearing in the evening. Low 9. Bayfield Inlet - Dunchurch. Tonight..Cloudy. Clearing late this evening. Fog patches developing near midnight. Low 13. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 26. Humidex 31. UV index 8 or very high. Thursday night..Clearing in the evening. Low 11. South River - Burk's Falls. Tonight..Cloudy. Clearing late this evening. Fog patches developing near midnight. Low 13. Thursday..A mix of sun and cloud. Fog patches dissipating in the morning. High 26. Humidex 31. UV index 8 or very high. Thursday night..Clearing in the evening. Low 11. End $$$$^^ --- up 1 day, 20 hours, 41 minutes * Origin: Northern Realms (618:400/23) .