forecast
detailed forecast
| Extented weather forecast for Cornwall Ontario and the Seaway Issued by Environment Canada at 1100 ET Sat Jul 11 2026 |
| Today: Sunny. High 26. Humidex 29. Uv index 7 or high. Tonight: Clear. Low 13. Sunday: Sunny. High 28. Humidex 31. Uv index 8 or very high. Sunday Night: Clear. Low 15. Monday: A mix of sun and cloud with 30 percent chance of showers. High 29. Monday Night: Clear. Low 21. Tuesday: Sunny. High 33. Tuesday Night: Cloudy periods with 30 percent chance of showers. Low 21. Wednesday: Sunny. High 29. Wednesday Night: Clear. Low 15. Thursday: A mix of sun and cloud. High 28. Thursday Night: Cloudy periods. Low 14. Friday: A mix of sun and cloud. High 26. |
regional radar

■ Cornwall
Rain Snow Ice Mix















