This reference page collects montreal climate: monthly averages in one place: annual mean temperature 6.4 C; warmest month Jul (21.7 C); coldest month Jan (-11.2 C); wettest month Oct (3.67 mm/day). Figures are refreshed automatically by a scheduled build and cached locally so the page keeps its values even when the upstream API is temporarily unavailable. Use the table below for exact numbers, or the related pages for the same dataset for neighbouring periods and locations.
Annual mean temperature 6.4 C
Warmest month Jul (21.7 C)
Coldest month Jan (-11.2 C)
Wettest month Oct (3.67 mm/day)
All-time record high 36.6 C
All-time record low -41.5 C
Annual precipitation 1,084 mm / year
Coordinates 45.5019, -73.5674
Population 1,780,000
Average monthly temperature and rainfall in Montreal
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
-11.2
2.33
7.8
-41.5
Feb
-9.6
2.40
11.3
-36.0
Mar
-3.3
2.44
22.8
-32.8
Apr
5.4
3.16
26.0
-11.9
May
13.2
3.00
31.0
-2.9
Jun
18.5
3.62
32.8
3.1
Jul
21.7
3.07
36.6
8.6
Aug
21.1
3.15
34.7
7.7
Sep
16.9
2.93
34.2
0.7
Oct
8.8
3.67
26.4
-4.6
Nov
1.4
2.69
20.6
-20.9
Dec
-6.6
3.17
17.1
-34.8
What the Montreal climate table shows
Values are multi-decadal climatological averages for the 45.5019, -73.5674 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.
Frequently asked questions
Where does the data on montreal climate: monthly averages come from?
From a public open API that is queried automatically and cached after every successful run.
How often is montreal climate: monthly averages updated?
The build runs on a schedule, so values refresh at least daily and old pages stay live.