
Brockville — Today, a few showers ending this morning then a mix of sun and cloud with 30 percent chance of showers. Wind northwest 30 km/h gusting to 50. High 23°C. Humidex 28. UV index 8 or very high.
Tonight, partly cloudy. Becoming clear this evening. Low 13°C.

Monday, sunny. High 26°C. Humidex 27. UV index 9 or very high.
Your 5-day local forecast:



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Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Tuesday, September 1, 2026