
Brockville — Today, sunny. Fog patches dissipating this morning. High 27°C. UV index 9 or very high.
Tonight, clear. Low 11°C.

Tuesday, sunny, becoming a mix of sun and cloud in the afternoon. High 30°C. Humidex 33. 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