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| Extented weather forecast for Cornwall Ontario and the Seaway Issued by Environment Canada at 1100 ET Sun Nov 8 2026 |
| Today: Mainly cloudy. Wind southwest 20 km/h gusting to 40. High 10. Uv index 2 or low. Tonight: Cloudy with 40 percent chance of showers. Wind southwest 20 km/h becoming light early this evening. Low 6. Monday: Cloudy. 40 percent chance of showers early in the morning. Temperature steady near 8. Uv index 1 or low. Monday Night: Cloudy. Low plus 3. Tuesday: Cloudy with 40 percent chance of showers. High 11. Tuesday Night: Cloudy with 30 percent chance of showers. Low plus 4. Wednesday: Cloudy with 30 percent chance of showers. High 9. Wednesday Night: Cloudy periods with 30 percent chance of rain showers or flurries. Low minus 2. Thursday: A mix of sun and cloud with 30 percent chance of rain showers or flurries. High 6. Thursday Night: Cloudy periods with 30 percent chance of rain showers or flurries. Low minus 3. Friday: A mix of sun and cloud with 40 percent chance of rain showers or flurries. High plus 5. Friday Night: Cloudy periods with 30 percent chance of rain showers or flurries. Low minus 2. Saturday: A mix of sun and cloud with 30 percent chance of rain showers or flurries. High 6. |
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