forecast
detailed forecast
| Extented weather forecast for Cornwall Ontario and the Seaway Issued by Environment Canada at 1500 utc May 29 2026 |
| Today: Mainly cloudy. 30 percent chance of showers early this afternoon. A few showers beginning this afternoon. Risk of a thunderstorm this afternoon. Local amount 5 mm. Wind southwest 30 km/h gusting to 50 becoming northwest 40 gusting to 60 this afternoon. High 19. Uv index 6 or high. Tonight: Showers ending overnight then cloudy with 40 percent chance of showers. Risk of a thunderstorm early this evening. Local amount 5 to 10 mm. Wind northwest 40 km/h gusting to 60 diminishing to 20 gusting to 50 this evening. Low 9. Saturday: Clearing. Wind northeast 30 km/h gusting to 50. High 18. Uv index 6 or high. Saturday Night: Clear. Low 7. Sunday: Cloudy with 60 percent chance of showers. High 20. Sunday Night: Cloudy with 30 percent chance of showers. Low 10. Monday: A mix of sun and cloud with 40 percent chance of showers. High 22. 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 23. Wednesday Night: Cloudy periods. Low 12. Thursday: A mix of sun and cloud. High 27. |
regional radar















