Brockville — Today, mainly cloudy with a 70 percent chance of flurries this afternoon. Wind up to 15 km/h. High minus 8°C. Wind chill is minus 22 this morning and minus 14 this afternoon. UV index is 1 or low.
Tonight, mainly cloudy. Wind up to 15 km/h. Low minus 12°C. Wind chill near minus 18.
Tuesday, Cloudy. Wind is becoming south 20 km/h early in the afternoon. High minus 4°C. Wind chill is minus 18 in the morning and minus 10 in the afternoon. UV index is 1 or low.
Your 5-day local forecast:
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Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Monday, September 14, 2026