forecast
detailed forecast
| Extented weather forecast for Cornwall Ontario and the Seaway Issued by Environment Canada at 1530 ET Sun Aug 23 2026 |
| Tonight: A few showers ending near midnight then mainly cloudy with 30 percent chance of showers. Risk of a thunderstorm this evening. Wind becoming southwest 20 km/h gusting to 40 early this evening. Low 14. Monday: Mainly cloudy with 30 percent chance of showers in the morning and early in the afternoon. A few showers beginning in the afternoon. Risk of a thunderstorm in the afternoon. Wind becoming southwest 20 km/h gusting to 40 in the morning. High 21. Humidex 26. Uv index 6 or high. Monday Night: A few showers ending near midnight then cloudy with 30 percent chance of showers. Risk of a thunderstorm in the evening. Wind southwest 30 km/h becoming light near midnight. Low 14. Tuesday: A mix of sun and cloud with 30 percent chance of showers. High 23. Tuesday Night: Clear. Low 15. Wednesday: Sunny. High 25. Wednesday Night: Clear. Low 15. Thursday: A mix of sun and cloud with 40 percent chance of showers. High 25. Thursday Night: Cloudy with 30 percent chance of showers. Low 16. Friday: Cloudy with 30 percent chance of showers. High 24. Friday Night: Cloudy periods with 30 percent chance of showers. Low 11. Saturday: A mix of sun and cloud. High 22. |
regional radar
news headlines
The sudden spike in AI data centres that are planned or under construction in Canada is sparking controversy among those . . . more
The RCMP have arrested a person suspected of a shooting on Saturday morning that injured three people and prompted a . . . more
Délynn Jacquard set a record during the 22nd annual Wedgeport Tuna Tournament and Festival. . . . more
Data from the Alberta government indicates 40 grizzlies were killed by people in 2024, with 21 of those bears killed . . . more
sports headlines
Canada’s Camryn Rogers and Ethan Katzberg both finished first on Sunday at the Diamond League track and field meet in . . . more
The Canadian beach volleyball duo of Melissa Humana-Paredes and Brandie Wilkerson fell short in the semifinals of the Montreal Elite16 . . . more
Melissa Humana-Paredes is happy to be back competing in Canada as she and Brandie Wilkerson prepare for another Olympic run. . . . more
Miyu Yamashita increased her already healthy lead and Canadian teenager Aphrodite Deng vaulted up the leaderboard Saturday at the CPKC . . . more
Canada's Victor Lai repeated as men's singles bronze medallist at the badminton world championships on Saturday. . . . more
weather alert
air quality health index
uv forecast
explore the seaway city
discover the counties of sdg
