forecast
detailed forecast
| Extented weather forecast for Cornwall Ontario and the Seaway Issued by Environment Canada at 1500 utc Jun 07 2026 |
| Today: A few showers ending near noon then cloudy with 30 percent chance of showers. Wind northeast 20 km/h becoming light this afternoon. High 21. Humidex 26. Uv index 5 or moderate. Tonight: Clearing this evening. Low 11. Monday: Sunny. High 26. Uv index 9 or very high. Monday Night: Clear. Low 11. Tuesday: Sunny. High 32. Tuesday Night: Cloudy periods with 40 percent chance of showers. Low 17. Wednesday: Cloudy with 40 percent chance of showers. High 25. Wednesday Night: Cloudy with 30 percent chance of showers. Low 19. Thursday: Cloudy with 30 percent chance of showers. High 30. Thursday Night: Cloudy periods with 30 percent chance of showers. Low 22. Friday: Cloudy with 30 percent chance of showers. High 31. Friday Night: Cloudy. Low 18. Saturday: A mix of sun and cloud. High 29. |
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