forecast
detailed forecast
| Extented weather forecast for Cornwall Ontario and the Seaway Issued by Environment Canada at 0500 ET Wed Nov 11 2026 |
| Today: Cloudy. Wind becoming west 20 km/h early this afternoon. High 8. Uv index 1 or low. Tonight: Cloudy. Becoming partly cloudy this evening. Low plus 2. Thursday: A mix of sun and cloud. Wind northeast 30 km/h becoming light late in the afternoon. High plus 5. Uv index 2 or low. Thursday Night: Cloudy with 30 percent chance of rain showers or flurries. Low plus 1. Friday: Cloudy. High plus 2. Friday Night: Cloudy. Low zero. Saturday: Cloudy. High plus 3. Saturday Night: Cloudy periods. Low minus 1. Sunday: A mix of sun and cloud. High plus 4. Sunday Night: Cloudy periods. Low minus 3. Monday: A mix of sun and cloud. High plus 3. Monday Night: Clear. Low minus 1. Tuesday: Sunny. High plus 5. |
regional radar

■ Cornwall
Rain Snow Ice Mix














