forecast
detailed forecast
| Extented weather forecast for Cornwall Ontario and the Seaway Issued by Environment Canada at 1930 utc Jun 16 2026 |
| Tonight: Partly cloudy. 30 percent chance of showers early this evening. Wind southwest 20 km/h gusting to 40 becoming light this evening. Low 12. Wednesday: A mix of sun and cloud with 60 percent chance of showers and risk of a thunderstorm. Wind becoming southeast 30 km/h gusting to 50 in the morning. High 22. Uv index 8 or very high. Wednesday Night: Partly cloudy. Becoming cloudy before morning with showers. Low 16. Thursday: Showers. High 23. Thursday Night: Cloudy with 40 percent chance of showers. Low 14. Friday: Cloudy with 60 percent chance of showers. High 22. Friday Night: Cloudy with 40 percent chance of showers. Low 13. Saturday: Cloudy with 40 percent chance of showers. High 20. Saturday Night: Cloudy periods with 30 percent chance of showers. Low 11. Sunday: A mix of sun and cloud with 30 percent chance of showers. High 21. Sunday Night: Cloudy periods. Low 13. Monday: Cloudy with 30 percent chance of showers. High 22. |
regional radar

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