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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 1530 ET Thu Jul 23 2026
Tonight: Clear. Wind southwest 20 km/h gusting to 40 becoming light late this evening. Low 13.
Friday: Mainly sunny. Wind southwest 20 km/h becoming light in the afternoon. High 27. Humidex 31. Uv index 7 or high.
Friday Night: Clear. Becoming partly cloudy before morning. Low 13.
Saturday: Sunny. High 29.
Saturday Night: Cloudy periods with 30 percent chance of showers. Low 15.
Sunday: A mix of sun and cloud with 40 percent chance of showers. High 28.
Sunday Night: Cloudy periods. Low 15.
Monday: Cloudy with 60 percent chance of showers. High 25.
Monday Night: Cloudy with 60 percent chance of showers. Low 18.
Tuesday: Cloudy with 60 percent chance of showers. High 25.
Tuesday Night: Cloudy. Low 16.
Wednesday: Cloudy. High 25.

regional radar

Cornwall
🌧 Rain Snow 🧊 Ice 🌨 Mix

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On July 23rd

explore the seaway city

Explore the Seaway City

discover the counties of sdg

Discover the Counties of SDG

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