Brockville — Today, a mix of sun and cloud. Becoming cloudy this afternoon. High 22. UV index 8 or very high.
Tonight, showers. Wind northeast 20 km/h becoming light late this evening. Low 14.
Wednesday, cloudy with a 40 percent chance of showers in the morning and early in the afternoon. High 23. Humidex 26. UV index 4 or moderate
Your 5-day local forecast:
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Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Tuesday, September 1, 2026