HEAT WARNING Continues for Brockville & Leeds-Grenville for Today!
Brockville — Today, a mix of sun and cloud. There is a 30 percent chance of showers early this morning, with a risk of a thunderstorm. Hazy. Wind is becoming southwest 20 km/h this afternoon. High 31. Humidex 36. UV index 9 or very high.
Tonight, clear. Hazy. Low 20.
Tuesday, sunny. Hazy. Wind is becoming southwest 20 km/h late in the morning. High 32. Humidex 39. UV index 9 or very high.
Your 5-day local forecast:
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Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Tuesday, October 6, 2026