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Get the Montreal weather forecast without ads, cookies, or tracking. Open-Meteo data, 10-day forecast, hourly conditions, and radar — all free. click here to hide this
July is the hottest month in Montreal, with an average high of 27°C / 80°F; January is the coldest (-4°C / 24°F). October is the wettest month, averaging 108 mm / 4.3 in of precipitation.
| Month | High °C / °F | Low °C / °F | Precip mm / in | Wet days |
|---|---|---|---|---|
| Jan | -4 / 24 | -12 / 11 | 82 / 3.2 | 13 |
| Feb | -3 / 26 | -11 / 13 | 71 / 2.8 | 12 |
| Mar | 2 / 35 | -6 / 22 | 85 / 3.3 | 12 |
| Apr | 10 / 49 | 1 / 34 | 97 / 3.8 | 11 |
| May | 17 / 63 | 8 / 46 | 89 / 3.5 | 12 |
| Jun | 24 / 75 | 15 / 58 | 103 / 4.1 | 11 |
| Jul | 27 / 80 | 18 / 64 | 92 / 3.6 | 11 |
| Aug | 26 / 78 | 17 / 62 | 107 / 4.2 | 10 |
| Sep | 21 / 70 | 13 / 55 | 88 / 3.5 | 10 |
| Oct | 13 / 56 | 6 / 43 | 108 / 4.3 | 11 |
| Nov | 6 / 43 | 0 / 32 | 82 / 3.2 | 11 |
| Dec | -1 / 30 | -7 / 19 | 104 / 4.1 | 14 |
Extremes since 1994: highest 37°C / 98°F (July 2, 2018), lowest -30°C / -22°F (February 3, 1996).
Daylight lasts about 15.5 hours in June and 8.5 hours in December.
Data: Meteostat — Montreal McTavish, 1991–2020 averages.
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