Warm long weekend ahead before rain moves into Montreal
Posted September 4, 2026 8:28 am.
Montreal is in for a warm and mostly pleasant stretch of weather over the next several days, although a few showers could interrupt the sunshine before a wetter pattern arrives later in the week.
Today will bring a mix of sun and cloud, with a 30 per cent chance of showers developing this afternoon. Temperatures are expected to reach 24 Celusis, with a humidex of 29, while winds become westerly at 20 km/h. The UV index will reach 6, considered high, so residents spending time outdoors should take precautions against the sun. Tonight will remain partly cloudy with a 30 per cent chance of showers and a low of 17 C.
Saturday will be mainly cloudy, with a 40 percent chance of showers late in the afternoon as northeast winds reach 20 km/h near noon. The high will be 23°C, with a humidex of 27, before skies clear Saturday night and temperatures fall to 13°C.
Sunday is expected to bring a welcome return to sunshine, with a high of 25 C and clear skies overnight.
The sunny weather will continue Monday, when Montreal could reach 26 C under clear skies, with a mild overnight low of 16 C.
Conditions will begin to change Tuesday, with a mix of sun and cloud and a high of 23 C before clouds increase overnight and the chance of showers rises to 60 per cent.
Wednesday will remain cloudy with a 60 per cent chance of showers and a high of 22 C, followed by periods of rain Wednesday night.
By Thursday, cooler and unsettled weather is expected, with cloudy skies, a 60 per cent chance of showers and a high of 20 C.
For Montrealers, the message for the coming days is simple: enjoy the sunshine while it lasts, with the warmest and driest conditions expected through the weekend.
