Brockville — Today, mainly cloudy with a 40 percent chance of showers late this afternoon. Wind is becoming northwest 20 km/h this morning. High plus 4°C. UV index is 2 or low.
Tonight, partly cloudy with a 40 percent chance of rain showers this evening, then 40 percent chance of flurries late this evening and after midnight. Low minus 1°C.
Friday, cloudy with a 40 percent chance of showers late in the afternoon. Wind is becoming northwest 20 km/h near noon. High plus 3°C. 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