Montreal, Canada Weather
Montreal hourly forecast: next 24 hours
Today's high of 74°F (24°C) is about 5°F (3°C) above the typical September high of 69°F (20°C).
Current conditions in detail
Montreal weather tomorrow (Thursday, September 17)
Tomorrow in Montreal looks overcast, with a high of 65° and an overnight low of 52°. Rain is unlikely (11% chance). Winds top out near 7 mph, and the UV index reaches 4 (moderate).
Montreal 14-day forecast
About the weather in Montreal
Seasons are the whole story in Montreal. The gap between an average July and an average January is 30°C - warm summers and cold, often snowy winters - which in practice means 77°F (25°C) afternoons at one end of the calendar and 22°F (-6°C) at the other.
Montreal weather: quick facts
- Hottest month: July - highs near 77°F (25°C)
- Coldest month: January - highs near 22°F (-6°C)
- Decade extremes (2015-2024): 92°F (34°C) high · -27°F (-33°C) low
- Wettest month: October (12 rainy days) · Sunniest: July (11.9 h sun/day)
- Climate type: humid continental
- Annual swing: 30°C between the average warmest and coolest month · day to night: 9°C
- Snow: about 32 days a year
- Months with freezing average lows: 6
- Average humidity: 72%
Temperatures through the year
January sits at the other end of the year: 22°F (-6°C) by day, 7°F (-14°C) at night. At its warmest, in July, Montreal runs to 77°F (25°C) in the afternoon and back to 62°F (17°C) by dawn. The gridded 2015-2024 daily record for this location tops out at 92°F (34°C) and bottoms at -27°F (-33°C) - decade extremes, not all-time station records. October is the wettest month at 4.9 inches (126 mm) over 12 days; February is the driest.
Rain, sun and snow
Between the average July and the average January lie 30°C, a wider spread than 97% of the 3496 cities in our dataset. Snow falls on roughly 32 days a year, mostly November through April.
Season by season
Spring (March through May)
Spring in Montreal stays firmly cold, with daytime highs averaging 50°F (10°C) and nights around 32°F (0°C); rain falls on around 34 of the 90 days, plus about 6 snowy days.
Summer (June through August)
Through summer, Montreal is mild and warm: 75°F (24°C) by day, 59°F (15°C) after dark, and rain falls on around 39 of the 90 days. Daylight is generous - around 11.2 hours of sun a day.
Fall (September through November)
Fall is mild here - highs near 55°F (13°C), nights near 41°F (5°C), and rain falls on around 33 of the 90 days, plus about 3 snowy days.
Winter (December through February)
Winter in Montreal is frigid, with daytime highs averaging 25°F (-4°C) and nights around 11°F (-12°C); rain falls on around 36 of the 90 days, plus about 22 snowy days. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
Average temperatures in Montreal by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 22° | 7° | 12 | 3.1 in | 5.0 h/day | 77% |
| February | 25° | 8° | 11 | 3.0 in | 6.2 h/day | 75% |
| March | 35° | 19° | 11 | 3.1 in | 7.7 h/day | 70% |
| April | 49° | 31° | 12 | 4.5 in | 8.2 h/day | 65% |
| May | 64° | 45° | 10 | 3.0 in | 10.4 h/day | 63% |
| June | 72° | 55° | 14 | 4.6 in | 10.7 h/day | 68% |
| July | 77° | 62° | 12 | 4.2 in | 11.9 h/day | 72% |
| August | 75° | 61° | 13 | 4.8 in | 10.9 h/day | 74% |
| September | 69° | 54° | 9 | 3.0 in | 9.5 h/day | 75% |
| October | 55° | 42° | 12 | 4.9 in | 6.8 h/day | 75% |
| November | 41° | 29° | 12 | 3.2 in | 5.4 h/day | 74% |
| December | 29° | 17° | 13 | 3.6 in | 4.3 h/day | 76% |