Residents of St. Theresa Point, Manitoba, are starting the week with chilly temperatures, but Environment Canada is forecasting a significant warming trend that will bring much milder conditions by the weekend.
As of 12:00 PM CDT on Tuesday, May 19, 2026, temperatures in the community were recorded at 3°C at the Island Lake Airport. Tuesday will remain mainly cloudy with a high of 7°C, with temperatures expected to drop to -1°C overnight alongside a 30 percent chance of flurries.
The weather will shift mid-week as temperatures begin to climb. According to Environment Canada, residents can expect sunny skies and a high of 15°C by Thursday, May 21, 2026. This warming trend continues into Friday, May 22, 2026, with a high of 20°C.
While the start of the week is cooler than the historical average high of 15°C for May, the coming days will bring more seasonal warmth. Saturday, May 23, 2026, and Sunday, May 24, 2026, will both reach 19°C. Those planning outdoor activities over the weekend should be aware of a 30 percent chance of showers on Saturday night, increasing to a 60 percent chance of showers on Sunday night.
