
Brockville — Today, sunny. Fog patches dissipating this morning. High 27°C. UV index 9 or very high.
Tonight, clear. Low 11°C.

Tuesday, sunny, becoming a mix of sun and cloud in the afternoon. High 30°C. Humidex 33. UV index 9 or very high.
Your 5-day local forecast:




More Stories
YELLOW WATCH – SEVERE THUNDERSTORM WATCH for Brockville – Prescott, Mallorytown – Gananoque, Kemptville – Merrickville, Charleston Lake – Westport
ORANGE WARNING: Heat Warning for Our Region
Good Morning, Brockville, Leeds-Grenville! Local Morning Weather Update – Canada Day, Wednesday, July 1, 2026