Montreal forecast: Heavy rain Tuesday, sunshine Thursday and a chilly weekend
Posted October 12, 2026 12:46 pm.
Montrealers can expect a wet start to the week, with heavy rain possible Tuesday before sunshine returns Thursday and temperatures take a dip heading into the weekend.
Environment and Climate Change Canada has issued a special weather statement for Montreal, the Montérégie, Bois-Francs and the Eastern Townships, warning that rainfall amounts could reach 40 to 60 millimetres Tuesday afternoon and evening.
The rain could lead to water pooling on roads and in low-lying areas.
The weather agency says a nearly stationary warm front associated with a low-pressure system moving south of the border will bring bands of heavy rain to the affected regions.
Periods of rain or drizzle are expected to begin Monday afternoon in Montreal, with a high of 17 Celsius. Rain will continue overnight, with a low of 6 C.
Tuesday will be cooler, with rain at times heavy and a high of just 9 C. Winds from the northeast could gust to 40 km/h, while the temperature will drop to 7 C overnight.
Wednesday will remain cloudy, with a 40 per cent chance of showers and a high of 11 C.
Sunshine is expected to return Thursday, with a high of 13 C, before rain moves back into the forecast Friday, when temperatures could reach 16 C.
The weekend will bring cooler conditions. Saturday is expected to have a mix of sun and cloud, with a high of 6 C and an overnight low of minus-1 C.
Sunday will bring a mix of sun and cloud and a high of 10 C.
