forecast
detailed forecast
| Extented weather forecast for Cornwall Ontario and the Seaway Issued by Environment Canada at 1500 utc Jun 06 2026 |
| Today: Cloudy. 40 percent chance of showers near noon. Showers beginning early this afternoon. Risk of a thunderstorm this afternoon. Wind southwest 30 km/h gusting to 60. High 23. Humidex 31. Uv index 3 or moderate. Tonight: Showers ending this evening then cloudy with 40 percent chance of showers. Risk of a thunderstorm this evening. Wind southwest 30 km/h gusting to 50. Low 15. Sunday: Cloudy. 30 percent chance of showers in the morning. Wind west 20 km/h gusting to 40 becoming north 20 late in the morning then light in the afternoon. High 23. Humidex 27. Uv index 5 or moderate. Sunday Night: Cloudy periods with 30 percent chance of showers. Low 11. Monday: Sunny. High 26. Monday Night: Clear. Low 11. Tuesday: Sunny. High 30. Tuesday Night: Cloudy periods with 30 percent chance of showers. Low 15. Wednesday: Cloudy with 40 percent chance of showers. High 30. Wednesday Night: Cloudy with 30 percent chance of showers. Low 20. Thursday: A mix of sun and cloud with 30 percent chance of showers. High 31. Thursday Night: Cloudy periods with 30 percent chance of showers. Low 19. Friday: A mix of sun and cloud with 30 percent chance of showers. High 32. |
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