HEAT WARNING Continues for Brockville & Leeds-Grenville for Today!

Brockville — Today is cloudy. 70 percent chance of showers late this morning and this afternoon, with a risk of a thunderstorm. Wind becoming southwest 40 km/h, gusting to 60, this morning, then west 20 km/h, gusting to 40, late this afternoon. High 29. Humidex 39. UV index 7 or high.
Tonight, cloudy. There is a 40 percent chance of showers early this evening, with a risk of a thunderstorm. Wind northwest 20 km/h gusting to 40, becoming light before morning. Low 13.

Friday, sunny. High 24. Humidex 26. UV index 9 or very high.
Your 5-day local forecast:



More Stories
Good Evening, Brockville, Leeds-Grenville! Local Weather Update – Thursday, March 5, 2026
Yellow Warning – Freezing Rain: Gananoque, Mallorytown & Kingston
VIDEO: Registration Now Open for Brockville Fire Department’s 3rd Annual Belles & Ladders