Subj : Southern Ontario Weather To : All From : Northern Realms Date : Mon Jul 18 2022 05:05:02 FPCN11 CWTO 180900 Forecasts for Southern Ontario and the National Capital Region issued by Environment Canada at 5:00 a.m. EDT Monday 18 July 2022 for today and Tuesday. The next scheduled forecast will be issued at 11:00 a.m. EDT. City of Toronto. Today..Showers ending this afternoon then cloudy. Risk of a thunderstorm this morning and early this afternoon. Local amount 10 to 20 mm. Wind becoming northwest 20 km/h early this afternoon. High 25. Humidex 33. UV index 4 or moderate. Tonight..Clearing late this evening. Low 20. Tuesday..A mix of sun and cloud. 40 percent chance of showers in the afternoon with risk of a thunderstorm. Wind northwest 20 km/h becoming light near noon. High 30. Humidex 38. UV index 9 or very high. City of Hamilton. Today..Showers ending early this afternoon then cloudy with 30 percent chance of showers. Risk of a thunderstorm. Local amount 10 to 15 mm. High 24. Humidex 32. UV index 4 or moderate. Tonight..Partly cloudy with 30 percent chance of showers early this evening and risk of a thunderstorm. Clearing this evening. Low 18. Tuesday..A mix of sun and cloud. 40 percent chance of showers in the afternoon with risk of a thunderstorm. Wind becoming northwest 20 km/h gusting to 40 in the morning. High 29. Humidex 37. UV index 10 or very high. Niagara Falls - Welland - Southern Niagara Region. Today..Showers ending early this afternoon then cloudy with 30 percent chance of showers. Risk of a thunderstorm. Local amount 10 to 15 mm. Wind becoming west 20 km/h near noon. High 25. Humidex 33. UV index 4 or moderate. Tonight..Mainly cloudy. 30 percent chance of showers early this evening with risk of a thunderstorm. Clearing late this evening. Low 20. Tuesday..A mix of sun and cloud. 40 percent chance of showers in the afternoon with risk of a thunderstorm. Wind becoming west 20 km/h gusting to 40 in the morning. High 28. Humidex 36. UV index 10 or very high. Kitchener - Cambridge - Region of Waterloo. Today..A few showers ending late this morning then a mix of sun and cloud with 30 percent chance of showers. Risk of a thunderstorm. Wind becoming northwest 20 km/h this afternoon. High 25. Humidex 32. UV index 6 or high. Tonight..Partly cloudy with 30 percent chance of showers early this evening. Otherwise clear. Risk of a thunderstorm early this evening. Wind west 20 km/h gusting to 40 becoming light this evening. Low 15. Tuesday..A mix of sun and cloud. 40 percent chance of showers late in the morning and in the afternoon with risk of a thunderstorm. Wind northwest 30 km/h gusting to 50. High 29. Humidex 37. UV index 10 or very high. London - Parkhill - Eastern Middlesex County. Today..Showers ending this morning then a mix of sun and cloud with 30 percent chance of showers. Risk of a thunderstorm. Wind becoming west 20 km/h early this afternoon. High 26. Humidex 34. UV index 7 or high. Tonight..Partly cloudy with 30 percent chance of showers early this evening. Otherwise clear. Risk of a thunderstorm early this evening. Wind west 20 km/h becoming light this evening. Low 18. Tuesday..A mix of sun and cloud. 40 percent chance of showers in the afternoon with risk of a thunderstorm. Wind northwest 20 km/h becoming light in the morning. Wind becoming west 30 near noon. High 28. Humidex 37. UV index 10 or very high. Windsor - Leamington - Essex County. Today..Cloudy. 70 percent chance of showers early this morning with risk of a thunderstorm. Clearing near noon. Wind becoming northwest 20 km/h late this afternoon. High 29. Humidex 37. UV index 9 or very high. Tonight..Partly cloudy. Becoming clear this evening. Low 19. Tuesday..A mix of sun and cloud. 40 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 32. Humidex 40. UV index 10 or very high. Ottawa North - Kanata - Orleans. Today..Becoming cloudy this morning with a few showers. Risk of a thunderstorm late this morning and this afternoon. Local amount 10 to 15 mm. High 25. Humidex 33. UV index 4 or moderate. Tonight..A few showers ending this evening then cloudy. Risk of a thunderstorm early this evening. Low 18. Tuesday..A mix of sun and cloud. 40 percent chance of showers late in the morning and in the afternoon with risk of a thunderstorm. Wind becoming west 20 km/h gusting to 40 in the morning. High 29. Humidex 37. UV index 8 or very high. Ottawa South - Richmond - Metcalfe. Today..Becoming cloudy this morning with a few showers. Risk of a thunderstorm late this morning and this afternoon. Local amount 10 to 15 mm. High 25. Humidex 33. UV index 4 or moderate. Tonight..A few showers ending this evening then cloudy. Risk of a thunderstorm early this evening. Low 18. Tuesday..A mix of sun and cloud. 40 percent chance of showers late in the morning and in the afternoon with risk of a thunderstorm. Wind becoming west 20 km/h gusting to 40 in the morning. High 29. Humidex 37. UV index 8 or very high. This reproduction is a copy of the version available at: https://weather.gc.ca/forecast/public_bulletins_e.html?Bulletin=fpcn11.cwto --- * Origin: Northern Realms (21:3/110.3) .