Brockville – Today is cloudy with a 60 percent chance of showers and a thunderstorm risk. The wind is out of the southwest at 30 km/h gusting to 50 this morning. Today’s high is 25, and the humidex is 33. The UV index is 7 or high.
Tonight will see showers. The wind will be southwest at 20 km/h gusting to 40, becoming northwest 30 gusting to 50 late this evening. Tonight’s low is 15.
Friday will be mainly cloudy. The wind will be northwest at 20 km/h gusting to 4,0 becoming light in the morning. Friday’s high is 25, and the humidex is 30. The UV index is 7 or high.
Your 5-day local forecast:
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Good Evening, Brockville, Leeds-Grenville! Local Weather Update – Friday, March 6, 2026