This is the short version of Mississauga climate: monthly averages, with the monthly detail underneath. The gap between Feb and Jul is 24.5 C here: -2.8 C against 21.7 C. No month dominates: the wettest is Jul at 2.42 mm/day, the driest Mar at 1.71 mm/day. Taken together that is roughly 772 mm of rain a year for the grid cell. Every run re-reads the source and only rewrites this page when a figure actually changed. Use the table for exact numbers, or the related pages below for neighbouring locations and periods.
Annual mean temperature 9.1 C
Warmest month Jul (21.7 C)
Coldest month Feb (-2.8 C)
Wettest month Jul (2.42 mm/day)
All-time record high 32.2 C
All-time record low -22.6 C
Annual precipitation 774 mm / year
Coordinates 43.5789, -79.6583
Population 717,961
Average monthly temperature and rainfall in Mississauga
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
-2.7
1.74
11.4
-19.2
Feb
-2.8
1.74
11.0
-22.6
Mar
0.7
1.71
19.9
-21.4
Apr
5.5
2.38
18.9
-9.8
May
11.3
2.34
28.5
-0.5
Jun
17.6
2.37
30.4
4.5
Jul
21.7
2.42
32.2
8.0
Aug
21.6
1.90
31.9
11.2
Sep
18.2
2.19
30.9
4.8
Oct
11.5
2.39
25.3
-1.0
Nov
5.4
2.21
18.3
-7.1
Dec
0.5
2.02
13.0
-14.1
What the Mississauga climate table shows
Values are multi-decadal climatological averages for the 43.5789, -79.6583 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
Why do the numbers differ from a weather app?
An app shows one location on one day. These are long-run averages, so they smooth out single hot or cold spells.
How much rain is 2.42 mm/day in a month?
Rain is recorded as a daily mean, so 2.42 mm/day is roughly 74 mm across a 30-day month.