Brockville — Today, sunny. Fog patches dissipating early this morning. Wind becoming southwest 20 km/h gusting to 40 near noon. High 23°C. Humidex 27. UV index 7 or high.
Tonight, partly cloudy with 40 percent chance of showers overnight. Wind southwest 20 km/h becoming light this evening. Low 17°C.
Sunday, mainly cloudy with 60 percent chance of showers in the afternoon. Risk of a thunderstorm late in the afternoon. Wind becoming southwest 20 km/h near noon. High 23°C. Humidex 28. UV index 5 or moderate.
Your 5-day local forecast:
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Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Friday, August 28, 2026