Mississauga, Ontario, Canada climate
Average temperatures, precipitation and all-time records for Mississauga, Ontario, Canada, with every day graded against ~46 years of local climate history (1980–2026). Its warmest month is July, averaging a high of 27°C, and its coldest is January, with an average low of -9°C.
Mississauga is a Canadian city in the province of Ontario. Situated on the northwestern shore of Lake Ontario in the Regional Municipality of Peel, it borders Toronto (Etobicoke) to the east, Brampton to the north, Milton to the northwest, and Oakville to the southwest. via Wikipedia
How today compares
Latest recorded day: 2026-10-11. Each reading placed on Mississauga, Ontario, Canada's own ±7-day seasonal distribution.
Percentiles marked * are pending verification.
Mississauga average temperatures by month
Typical daily high and low, and average precipitation, for each month in Mississauga, Ontario, Canada, based on 1980–2026 records. The wettest month is January (3 mm on an average day).
| Month | Avg high | Avg low | Avg precip |
|---|---|---|---|
| January | -2°C | -9°C | 3 mm |
| February | 0°C | -8°C | 3 mm |
| March | 5°C | -4°C | 3 mm |
| April | 13°C | 3°C | 3 mm |
| May | 19°C | 8°C | 3 mm |
| June | 24°C | 14°C | 3 mm |
| July | 27°C | 17°C | 3 mm |
| August | 25°C | 16°C | 3 mm |
| September | 22°C | 12°C | 3 mm |
| October | 14°C | 6°C | 3 mm |
| November | 7°C | 0°C | 3 mm |
| December | 1°C | -5°C | 3 mm |
Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -23°C to 46°C scale, so the whole year's rhythm reads at a glance.
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Record extremes
- Hottest day on record: 37°C on 1988-07-08
- Coldest day on record: -30°C on 2015-02-16
Percentiles compare each day to Mississauga, Ontario, Canada's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →