Brockville — Today, a mix of sun and cloud. Fog patches dissipating this morning. High 26°C. Humidex 31. UV index 7 or high.
Tonight, partly cloudy. Low 16°C.
Thursday, mainly sunny, increasing cloudiness in the morning then 60 percent chance of showers in the afternoon. Risk of a thunderstorm in the afternoon. Wind becoming southwest 30 km/h gusting to 50 in the morning. High 23°C. Humidex 30. UV index 5 or moderate.
Your 5-day local forecast:
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Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Saturday, October 10, 2026