Montreal to be hit with rain, possible thunderstorms Wednesday afternoon

Heavy rain falls near Atwater market in Montreal on Aug. 3, 2026. (PierreLuc Labranche, CityNews)

By Tina Tenneriello

Posted September 2, 2026 10:13 am.

Montreal is expected to be hit with showers early Wednesday afternoon with a risk of thunderstorms into the evening and night.

We will reach a high of 24 Celsius, with a humidex making it feel closer to 30. More rain is expected overnight and a low of 18 C.

For Thursday, mainly cloudy with a 30 per cent chance of showers, when the temperature will reach 24 C. More clouds and possible rain overnight. We will see a low of 18 C.

For Friday, a 60 per cent chance of showers and a high of 24 C. We will see a low of 16 C overnight.

The long weekend is shaping up to be nice. Saturday is expected to bring a mix of sun and cloud with a high of 23 C, followed by a low of 13 C overnight.

Sunday will be sunny, with a high of 24 C, low of 13 C.

For Labour day Monday, a mix of sun and cloud and a high of 24 C, dropping to 14 C overnight.

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