Weather in Montréal
Live weather and 7-day forecast for Montréal, Canada, followed by what to expect in each month of the year.
Sunrise 07:20 Sunset 17:58 Daylight 10h 38m Sun times →
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Forecast data from Open-Meteo
Climate in Montréal: month by month
Averaged over 2023–2025, the warmest month in Montréal is July, with highs around 27 °C (81 °F) and lows around 19 °C (66 °F); the coolest is January, with highs around -3 °C (26 °F) and lows around -10 °C (14 °F). Average lows fall below freezing in December–March.
Montréal gets about 1,147 mm (45 in) of precipitation a year. The wettest month is August (150 mm over about 13 days) and the driest is September (54 mm).
| Month | Avg high | Avg low | Precipitation (mm) | Wet days | Daylight |
|---|---|---|---|---|---|
| January | -3° | -10° | 80 | 13 | 9h 6m |
| February | -2° | -11° | 62 | 11 | 10h 24m |
| March | 5° | -4° | 71 | 14 | 11h 52m |
| April | 13° | 2° | 114 | 14 | 13h 31m |
| May | 20° | 9° | 93 | 12 | 14h 54m |
| June | 25° | 15° | 116 | 13 | 15h 40m |
| July | 27° | 19° | 135 | 15 | 15h 20m |
| August | 25° | 17° | 150 | 13 | 14h 8m |
| September | 22° | 14° | 54 | 6 | 12h 34m |
| October | 16° | 8° | 103 | 11 | 10h 59m |
| November | 6° | 0° | 71 | 12 | 9h 31m |
| December | -1° | -8° | 98 | 14 | 8h 44m |
Averages of daily values from the ERA5 reanalysis for 2023–2025 at Montréal's coordinates (model elevation 76 m), via Open-Meteo (CC BY 4.0). Three recent years are not a 30-year climate normal; reanalysis smooths local extremes and tends to count more light-rain days than a rain gauge would. Daylight is sunrise to sunset on the 15th of each month.
Weather questions for Montréal
What is the hottest month in Montréal?
July, with average highs of 27 °C (81 °F) and lows of 19 °C (66 °F) over 2023–2025. The coolest month is January, averaging -3 °C (26 °F) by day and -10 °C (14 °F) at night.
What is the rainiest month in Montréal?
August, with about 150 mm of precipitation on roughly 13 days. The driest month is September (54 mm), and the yearly total is around 1,147 mm.
When is the weather mildest in Montréal?
Going by the averages, May–June and August–September are the months with average daytime highs between 18 °C and 27 °C (64–81 °F) — warm but not hot. August is the month most likely to bring rain.
More about Montréal
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About this forecast
The live forecast comes from Open-Meteo, which blends models from national weather services and is fetched fresh in your browser on each visit. Times in the hourly outlook are Montréal local time (America/Toronto).