Brockville — Today, a mix of sun and cloud. Becoming cloudy near noon with 40 percent chance of showers late this afternoon. Fog patches dissipating early this morning. High 24°C. Humidex 29. UV index 7 or high.
Tonight, cloudy with 40 percent chance of showers early this evening. A few showers beginning this evening. Local amount 5 mm. Low 15°C.
Tuesday, showers with risk of a thunderstorm. Local amount 10 to 15 mm. High 23°C. Humidex 31. UV index 3 or moderate.
Your 5-day local forecast:
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Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Saturday, October 10, 2026