forecast
detailed forecast
| Extented weather forecast for Cornwall Ontario and the Seaway Issued by Environment Canada at 1100 ET Fri Jul 10 2026 |
| Today: A mix of sun and cloud. 40 percent chance of showers late this afternoon with risk of a thunderstorm. High 28. Humidex 34. Uv index 8 or very high. Tonight: Partly cloudy with 40 percent chance of showers early this evening then clear. Risk of a thunderstorm early this evening. Low 16. Saturday: Sunny. High 27. Humidex 30. Uv index 7 or high. Saturday Night: Clear. Low 12. Sunday: Sunny. High 28. Sunday Night: Clear. Low 17. Monday: A mix of sun and cloud with 30 percent chance of showers. High 30. Monday Night: Clear. Low 20. Tuesday: Sunny. High 33. Tuesday Night: Clear. Low 21. Wednesday: A mix of sun and cloud. High 30. Wednesday Night: Cloudy periods. Low 16. Thursday: A mix of sun and cloud. High 29. |
regional radar

■ Cornwall
Rain Snow Ice Mix















