Residents in Oshawa should prepare for unsettled conditions today, April 5, 2026, as the region experiences a transition to significantly colder weather. While active weather alerts have expired as of this morning, Environment Canada is forecasting a 60 per cent chance of showers and windy conditions throughout the day.
According to observations from the Oshawa Executive Airport, temperatures reached 5.7°C by mid-morning. Forecasters expect a high of 7°C for the remainder of the day, accompanied by westerly winds gusting up to 50 km/h. While a previous rainfall warning for the area has ended, the ground remains saturated from recent storms, and residents are encouraged to remain cautious of pooling water on roads and near low-lying areas.
The region will see a sharp decline in temperatures starting Sunday night as an Arctic air mass moves in. By Monday, daytime temperatures will reach a high of 6°C before dropping significantly, with flurries expected overnight and a low of -6°C. The cooling trend will continue into Tuesday, with a daytime high of -1°C and the possibility of further flurries, leading to a frigid low of -8°C by Tuesday night.
With conditions shifting rapidly, officials remind residents to stay informed on the latest updates. For information regarding potential flooding, residents can check the Ontario Ministry of Natural Resources website.
