Cornwall skaters at the Optimist Park Skatepark
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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weather alert
air quality health index
uv forecastExtreme11+
Very High8–10
High6–7
Moderate3–5
Low1–2
8 VERY HIGH
Sun protection recommended
1120 ET Sun Jul 26 2026
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