Montreal forecast calls for heat, rain and sunshine this week
Posted August 17, 2026 7:18 am.
Montreal will see a mix of warm temperatures, rain and sunshine this week, according to the latest forecast.
Monday will reach 27 celsius, with a humidex of 34. Showers are expected to end early in the morning, followed by a mix of sun and cloud and a 30 per cent chance of showers.
Tuesday will remain warm, with a high of 26 C and a humidex of 31. The UV index will reach 7, which is considered high.
Rain is expected to move in Wednesday, with periods of rain and a high of 22 C. Showers are forecast to continue Wednesday night, when temperatures will drop to 15 C.
The weather will improve Thursday, with sunny skies and a high of 24 C. Friday is also expected to be sunny, with temperatures reaching 26 C.
Cloudy conditions and a 60 per cent chance of showers are forecast for Saturday and Sunday. Sunday will be cooler, with a high of 22 C.
The forecast points to a changeable week for Montreal, with warm and humid conditions early in the week followed by rain and cooler temperatures before another stretch of sunshine.
