Montreal Weather — 10-Day Forecast and 30-Day Outlook

Weather in Montreal (Canada) right now and for the days ahead: a day-by-day 10-day forecast, an outlook up to 30 days, and past weather for any date.

Montreal climate by month

In Montreal, the warmest month is July, with average highs of 27.3 °C, and the coldest is January, with average lows of -16.4 °C. About 991 mm of rain falls each year over 156 days; October is the wettest month (105 mm) and March the driest (65 mm).

Best time to visit Montreal: for mild, mostly dry days, aim for June, July, August, September.

Month	Avg high	Avg low	Rain	Rainy days
January	-5.7 °C	-16.4 °C	72 mm	14
February	-3.9 °C	-15 °C	67 mm	11
March	2.2 °C	-7.2 °C	65 mm	12
April	10.2 °C	0.1 °C	96 mm	12
May	18.7 °C	7.7 °C	67 mm	12
June	23.3 °C	13.5 °C	97 mm	16
July	27.3 °C	17.2 °C	95 mm	15
August	26.7 °C	16.5 °C	100 mm	15
September	23.1 °C	12 °C	70 mm	10
October	14.9 °C	5.3 °C	105 mm	12
November	5.5 °C	-2.3 °C	70 mm	12
December	-1.3 °C	-9.3 °C	87 mm	14

2015–2024 averages computed from NASA POWER data (about 50 km grid: values may differ slightly from a city weather station, especially on the coast or in the mountains).

Frequently asked questions

What is the 15-day weather forecast for Montreal?

The first 10 days come from the forecast model of the Norwegian Meteorological Institute (MET Norway), updated several times a day. After that, we show the outlook: the normal temperatures in Montreal for the time of year and the chance of rain, based on the last 10 years.

Is there a 30-day forecast for Montreal?

No model can reliably forecast the weather on a specific day 30 days ahead. The outlook shows what is typical in Montreal at that time of year: a good basis for planning a trip, to be checked against the 10-day forecast as the date gets closer.

What is the hottest month in Montreal?

July, with average highs of 27.3 °C. The coldest month is January, with average lows of -16.4 °C.

What is the rainiest month in Montreal?

October. The driest month is March. On average it rains on 156 days a year in Montreal, for about 991 mm of precipitation.

How can I check past weather in Montreal?

Pick a date in the "Past weather" section to see the high and low temperatures and the rain recorded that day, how it compared with normal, and the same day in previous years.

Montreal Weather: 10-Day Forecast and 30-Day Outlook

Montreal

Forecast

Outlook up to 30 days

Past weather: what was it like?

Last 14 days

Montreal climate by month

Frequently asked questions

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