Brockville — Today, mainly sunny, then increasing cloudiness this morning then 40 percent chance of showers this afternoon. Wind becoming south 20 km/h gusting to 40 this morning. High 21°C. UV index 6 or high.
Tonight, mainly cloudy with 30 percent chance of showers this evening and after midnight. Low 16°C.
Wednesday, a mix of sun and cloud. High 25°C. Humidex 33. UV index 6 or high.
Your 5-day local forecast:
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Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Monday, September 14, 2026