Meteorologist Riley Laychuk forecasts a significant increase in heat and humidity across Manitoba starting Friday, July 10, 2026.

The spike in temperature and moisture levels poses potential health risks for residents, particularly those in southern regions where conditions will be most intense.

Laychuk said that heat and humidity will build across the province through the weekend [1]. The weather pattern suggests a steady climb in temperature that will affect the majority of the province's geography.

According to the forecast, the most severe conditions are expected in the south. Laychuk said that Humidex values could reach as high as 45 [1, 2] on Saturday and Sunday.

Residents are advised to monitor weather updates as the weekend approaches. The buildup of humidity often exacerbates the effects of high temperatures, increasing the risk of heat-related illness, and can complicate outdoor activities.

Local authorities typically recommend staying hydrated and seeking shade when Humidex levels reach these extremes. The forecast indicates that the heat will persist through the end of the weekend before any significant cooling trend arrives [1, 2].

“Heat and humidity will build across the province through the weekend.”

A Humidex of 45 indicates an extreme level of heat stress, where the combination of temperature and humidity prevents the body from cooling itself efficiently through perspiration. This forecast suggests a high-risk window for heatstroke and cardiovascular strain, likely triggering public health alerts and increasing demand for cooling infrastructure across southern Manitoba.