Brockville — Today, a mix of sun and cloud. There is a 30 percent chance of showers late this afternoon, with a risk of a thunderstorm. High 30. Humidex 36. UV index 9 or very high.
Tonight, partly cloudy with a 30 percent chance of showers early this evening, then clear. Risk of a thunderstorm early this evening. Low 17.
Saturday, increasing cloudiness early in the morning. There is a 30 percent chance of showers late in the afternoon, with a risk of a thunderstorm. High 32. Humidex 40. UV index 7 or high.
Your 5-day local forecast:
More Stories
Ontario Investing $1.49 Million in Upgrades and Repairs for Local Hospitals and Community Healthcare Facilities
Brockville Chamber Announces Wajahat Khaleeque as 2026 Business Person of the Year
Good Morning, Brockville, Leeds-Grenville! Local Morning Weather Update – Friday, July 17, 2026