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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 Sun Jul 26 2026
Tonight: Partly cloudy. 40 percent chance of showers with risk of a thunderstorm. Fog patches developing overnight. Low 18.
Monday: A mix of sun and cloud. 40 percent chance of showers in the afternoon with risk of a thunderstorm. Fog patches dissipating in the morning. High 27. Humidex 33. Uv index 8 or very high.
Monday Night: Mainly cloudy with 60 percent chance of showers and risk of a thunderstorm. Low 19.
Tuesday: Cloudy with 60 percent chance of showers. High 26.
Tuesday Night: Cloudy with 60 percent chance of showers. Low 16.
Wednesday: Cloudy with 40 percent chance of showers. High 24.
Wednesday Night: Cloudy periods with 30 percent chance of showers. Low 17.
Thursday: A mix of sun and cloud with 30 percent chance of showers. High 25.
Thursday Night: Cloudy periods. Low 17.
Friday: A mix of sun and cloud. High 26.
Friday Night: Cloudy periods. Low 18.
Saturday: Cloudy with 40 percent chance of showers. High 26.

regional radar

Cornwall
🌧 Rain Snow 🧊 Ice 🌨 Mix

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