
Brockville – Tonight will be clear. Wind southwest 30 km/h gusting to 50, becoming light late this evening. Low 24.
Tuesday is sunny, increasing cloudiness late in the morning, then a 30 percent chance of showers in the afternoon. Risk of a thunderstorm in the afternoon. Wind west 20 km/h gusting to 40, becoming light late in the afternoon. High 34. Humidex 43. UV index 10 or very high.

Tuesday night will be cloudy. Clearing near midnight. Low 19.


More Stories
Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Monday, August 17, 2026
Good Morning, Brockville, Leeds-Grenville! Local Weather Update – Saturday, August 15, 2026
Brian Simpson hired as City’s Director of Development Services