Brockville — Today, mainly cloudy. The wind is becoming west 20 km/h early this morning. High 22°C. UV index 5 or moderate.
Tonight, cloudy with a 30 percent chance of showers this evening. Low 9°C.
Wednesday, a mix of sun and clouds. Wind is becoming west 20 km/h late in the morning. High 23°C. UV index 6 or high.
Your 5-day local forecast:
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Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Tuesday, September 1, 2026