Brockville, Ontario, is in for a damp and unsettled week as an active weather pattern brings daily chances of showers, with some thunderstorms possible, through Friday, June 19. Environment Canada forecasts a mix of conditions, with temperatures staying in the low 20s and the best weather expected on Tuesday.
The unsettled stretch is being driven by an upper-level low pressure system parked over central Canada. This setup is sending several surface systems across Ontario, keeping skies cloudy and triggering rounds of rain and possible thunderstorms. Highs are expected to sit slightly below normal for mid-June, typically around 23°C for Brockville.
Tuesday, June 16 offers the brightest window for outdoor plans, with a mix of sun and cloud and a high of 22°C. Southwest winds will pick up to 20 km/h, gusting to 40 in the morning, but no rain is in the forecast. By Wednesday, conditions shift as a 60 percent chance of showers or thunderstorms returns, with a high of 23°C. Thursday brings more certainty of wet weather, with showers expected and another high of 23°C. The week wraps up Friday under cloudy skies and a 60 percent chance of showers, topping out at 22°C.
As of Monday afternoon, light rain was falling in Brockville with a temperature of 16.1°C and southwest winds at 17 km/h. No weather alerts are currently in effect for the area.
This active pattern comes during what is historically a busy month for severe weather in Ontario. The Northern Tornadoes Project confirmed three damaging wind events on June 12, including a tornado in Croton and two downbursts in Walpole Island and Blenheim. Tornado warnings were also issued for parts of northwestern Ontario on June 10 and southwestern Ontario on June 14.
Residents are reminded to check forecasts frequently and have a plan for changing conditions, especially on Wednesday and Thursday when the risk of showers and thunderstorms is most certain.
