Ontario

Unsettled Weather and Cooler Air Expected for Whitby This Weekend

By

Emma Kelly
April 17, 2026 11:27 am

Residents of Whitby, Ontario should prepare for an unsettled stretch of weather as a low-pressure system moves through the region this weekend, according to Environment Canada.

Conditions are expected to change significantly on Saturday, April 18, with showers starting near noon and a risk of thunderstorms in the afternoon. Winds will shift to the southwest, with gusts reaching 40 kilometres per hour, and rainfall could total between 10 and 15 millimetres. While there are currently no weather alerts in effect for the area, those planning outdoor activities should remain mindful of the incoming storm activity.

A notable drop in temperature is forecast for Sunday, April 19. Residents can expect a high of only 7°C during the day, followed by an overnight low reaching -6°C, with a possibility of rain showers or flurries. The cool conditions are expected to linger into Monday, April 20, which will see a mix of sun and cloud with a 30 percent chance of flurries and a high of 2°C.

Those heading out on Western Lake Ontario should be aware that while the lake is currently ice-free, conditions on the water will change this weekend. Wave heights are expected to build to between 0.5 and 1 metre on Saturday as winds shift. This unsettled weather occurs just ahead of the May 1 seasonal opening of the Port Whitby Marina, a facility operated by the Town of Whitby.

Better weather is on the horizon, with conditions expected to improve by mid-week. Forecasts indicate a return to sunny skies by Wednesday, April 22, with temperatures warming to 13°C by Thursday, April 23.

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