Brockville — Today, cloudy, a few showers beginning early this morning and ending this afternoon. Risk of a thunderstorm this morning. High 12°C. UV index 3 or moderate.
Tonight, cloudy, 60 percent chance of showers overnight. Low 9°C.
Thursday, cloudy with 60 percent chance of showers and risk of a thunderstorm. High 16°C. UV index 3 or moderate.
Your 5-day local forecast:
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Good Morning, Brockville, Leeds-Grenville! Local Morning Weather Update – Wednesday, May 13, 2026