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Montreal, Canada Weather Averages

July is the hottest month in Montreal with an average temperature of 21°C (70°F) and the coldest is January at -9°C (16°F). The wettest month is August with an average of 100mm of rain..

Average Temperature Montreal

What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month
What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month

Average High Low Temperature Montreal

What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

Average Day Temperature Montreal

What is Average Day Temperature?
The average temperature recorded between sunrise and sunset
What is Average Day Temperature?
The average temperature recorded between sunrise and sunset

Average Night Temperature Montreal

What is Average Night Temperature?
The average temperature recorded between sunset and sunrise
What is Average Night Temperature?
The average temperature recorded between sunset and sunrise

Average Rainfall Montreal

What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

Montreal : Next 24-Hour Weather

Tomorrow - 13th September 2025

Sunrise 06:30

Sunrise

Sunset 19:09

Sunset
22:00
Clear
20°C (67°F)
23:00
Clear
19°C (65°F)

Tomorrow - 14th September 2025

Sunrise 06:30

Sunrise

Sunset 19:09

Sunset
0:00
Clear
18°C (63°F)
1:00
Clear
17°C (62°F)
2:00
Clear
16°C (60°F)
3:00
Partly cloudy
16°C (60°F)
4:00
Thundery outbreaks possible
16°C (60°F)
5:00
Cloudy
16°C (59°F)
6:00
Partly cloudy
15°C (59°F)
7:00
Fog
16°C (60°F)
8:00
Patchy rain possible
17°C (61°F)
9:00
Partly cloudy
18°C (64°F)
10:00
Partly cloudy
20°C (67°F)
11:00
Partly cloudy
21°C (69°F)
12:00
Partly cloudy
22°C (71°F)
13:00
Clear
23°C (73°F)
14:00
Partly cloudy
24°C (74°F)
15:00
Overcast
23°C (73°F)
16:00
Overcast
23°C (73°F)
17:00
Overcast
23°C (72°F)
18:00
Overcast
22°C (72°F)
19:00
Overcast
22°C (71°F)
20:00
Overcast
21°C (69°F)
21:00
Overcast
20°C (67°F)
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