Heat-related fatality confirmed by Montreal health authorities since last Sunday
Heat Wave in Montreal Set to End as Cooler Weather Approaches
The Canadian Press has reported that Montreal's current heat wave, which has been ongoing since late June, is forecast to end on Wednesday, August 13, 2025. The high temperature today in Montreal is expected to reach 34°C, but temperatures are expected to drop starting tomorrow.
Environment Canada has issued heat warnings for the city, as until Tuesday, Montreal experienced highs up to 34°C with humidex values feeling as high as 41°C. However, the passing cold front on Wednesday will bring showers and thunderstorms, ushering in relief from the prolonged heat.
Montreal's public health department has not received reports of patients admitted to hospital for heat stroke since Sunday. They have been notified of a total of six heat-related deaths this year, with the first one since the current period of extreme heat reported on Sunday.
In response to the heat warnings, Montreal's public health department asks emergency room doctors to report all suspected heat-related deaths on days when Environment Canada issues heat warnings for the city. No specific information is given about the individuals who died from heat-related causes.
After Wednesday, temperatures are expected to remain milder, below the heat wave criteria, but still above seasonal norms with highs in the high 20s to low 30s and cooler nights around 15°C by Thursday night. The high temperature on Wednesday in Montreal is expected to be 29°C.
Seasonable temperatures are expected to return in Montreal on Thursday, bringing an end to the heat wave that has been affecting the city for over a month.
