forecast
detailed forecast
| Extented weather forecast for Cornwall Ontario and the Seaway Issued by Environment Canada at 1500 utc May 31 2026 |
| Today: A mix of sun and cloud with 60 percent chance of showers. Risk of a thunderstorm late this afternoon. Wind becoming west 20 km/h this afternoon. High 19. Uv index 6 or high. Tonight: Partly cloudy. 60 percent chance of showers early this evening with risk of a thunderstorm. Fog patches developing overnight. Wind west 20 km/h becoming light this evening. Low 7. Monday: A mix of sun and cloud. 40 percent chance of showers late in the afternoon with risk of a thunderstorm. Fog patches dissipating in the morning. High 20. Uv index 6 or high. Monday Night: Cloudy periods with 30 percent chance of showers. Low 9. Tuesday: A mix of sun and cloud. High 22. Tuesday Night: Cloudy periods. Low 9. Wednesday: A mix of sun and cloud. High 25. Wednesday Night: Cloudy periods. Low 12. Thursday: A mix of sun and cloud. High 27. Thursday Night: Cloudy periods. Low 14. Friday: A mix of sun and cloud with 40 percent chance of showers. High 27. Friday Night: Cloudy periods with 40 percent chance of showers. Low 16. Saturday: A mix of sun and cloud with 30 percent chance of showers. High 27. |
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