Brockville — Today, sunny, becoming a mix of sun and cloud near noon. Wind becoming northeast 20 km/h gusting to 40 this morning then light this afternoon. High 13°C. UV index 7 or high.
Tonight, partly cloudy. Low 0°C.
Sunday, mainly sunny. High 16°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