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Current conditions
Cornwall skaters at the Optimist Park Skatepark
Shadow

forecast

detailed forecast

Extented weather forecast for Cornwall Ontario and the Seaway
Issued by Environment Canada at 1100 ET Fri Jul 10 2026
Today: A mix of sun and cloud. 40 percent chance of showers late this afternoon with risk of a thunderstorm. High 28. Humidex 34. Uv index 8 or very high.
Tonight: Partly cloudy with 40 percent chance of showers early this evening then clear. Risk of a thunderstorm early this evening. Low 16.
Saturday: Sunny. High 27. Humidex 30. Uv index 7 or high.
Saturday Night: Clear. Low 12.
Sunday: Sunny. High 28.
Sunday Night: Clear. Low 17.
Monday: A mix of sun and cloud with 30 percent chance of showers. High 30.
Monday Night: Clear. Low 20.
Tuesday: Sunny. High 33.
Tuesday Night: Clear. Low 21.
Wednesday: A mix of sun and cloud. High 30.
Wednesday Night: Cloudy periods. Low 16.
Thursday: A mix of sun and cloud. High 29.

regional radar

Cornwall
🌧 Rain Snow 🧊 Ice 🌨 Mix

sports headlines

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On July 10th

explore the seaway city

Explore the Seaway City

discover the counties of sdg

Discover the Counties of SDG

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