The stretch of extreme heat that has baked Niverville and the R.M. of Hanover for more than a week is finally breaking today, Monday, July 20, 2026. Environment Canada lifted all heat warnings for the area by mid-morning as a cold front sweeps through southern Manitoba, bringing much-needed relief to residents. The multi-day heat event, which began on Friday, July 10, pushed humidex values into the mid-40s and set temperature records across the province.
As of 10:16 a.m., the weather alert for the R.M. of Hanover showed no warnings in effect. Overnight lows are expected to drop to 13 degrees Celsius, and Tuesday’s high is forecast at just 24 degrees with a humidex of 27, a sharp departure from the sweltering conditions that defined the past weekend. Winds from the northwest will gust up to 60 km/h this evening before easing overnight, and there is a chance of showers and a thunderstorm early in the evening.
The heat wave, which saw temperatures soar above 35 degrees Celsius and humidex values peak near 45, prompted widespread precautions across southern Manitoba. Seven communities set new temperature records on Sunday, July 12, including Winnipeg, which reached 35.3 degrees and felt like 48 with the humidity. McCreary was the province’s hotspot at 36.5 degrees. In Winnipeg, several outdoor events were cancelled due to the dangerous heat, and cooling centres were opened at leisure centres, libraries, and community centres. Closer to Niverville, the Hôpital Ste-Anne in Sainte-Anne, Manitoba, was evacuated on July 13 after its air cooling system failed and a freon leak occurred.
Throughout the heat event, Manitoba Health urged residents to stay hydrated, limit outdoor activity, and check on neighbours who are elderly, living alone, or have health conditions. Heat warning criteria for southern Manitoba are triggered when daytime highs reach 32 degrees, overnight lows stay above 16 degrees, and another day of 32-degree heat is forecast, conditions that were easily met and exceeded during this prolonged stretch.
With the cold front’s arrival, the region returns to seasonal temperatures and lower humidity. The overnight cooling will provide the first real break from the oppressive warmth, and any lingering risk of severe weather is expected to clear by late Monday evening.
