Brockville — Today, mainly cloudy. There is a 40% chance of showers this afternoon, with a risk of a thunderstorm. Fog patches are dissipating this morning. High 27. Humidex 35. UV index 8 or very high.
Tonight, mainly cloudy with a 60 percent chance of showers and a risk of a thunderstorm. Fog patches are developing after midnight. Low 17.
Thursday, a mix of sun and cloud with a 60 percent chance of showers and a risk of a thunderstorm. Fog patches are dissipating in the morning. High 26. Humidex 34. UV index 8 or very high.
Your 5-day local forecast:
More Stories
Good Morning, Brockville, Leeds-Grenville! Local Morning Weather Update – Saturday, March 7, 2026
Cataraqui Conservation Issues Flood Outlook Statement for Inland Lakes & Streams
Yellow Warning – Rainfall Issued for Brockville, Leeds-Grenville For Tonight Into Saturday