Brockville — Today, cloudy with 40 percent chance of flurries. Wind west 30 km/h gusting to 50. High 0°C. Wind chill minus 10 this morning. UV index 3 or moderate.
Tonight, cloudy, becoming partly cloudy after midnight. Wind northwest 20 km/h gusting to 40 becoming light this evening. Low minus 7°C. Wind chill near minus 10.
Friday, mainly sunny, increasing cloudiness near noon then snow. Amount 5 cm. Wind becoming south 20 km/h late in the morning. High 0°C. Wind chill minus 12 in the morning. UV index 3 or moderate.
Your 5-day local forecast:
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Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Tuesday, September 1, 2026