
Brockville — Today, sunny with a high of 28°C. Humidex 31. UV index 9 or very high.
Tonight, clear with a low of 16°C.

Saturday, sunny, with increasing cloudiness in the afternoon. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 27°C. Humidex 32. UV index 8 or very high.
Your 5-day local forecast:




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