Hamilton, Ontario, Canada climate
Average temperatures, precipitation and all-time records for Hamilton, Ontario, Canada, with every day graded against ~46 years of local climate history (1980–2026). Its warmest month is July, averaging a high of 26°C, and its coldest is January, with an average low of -7°C.
Hamilton is a port city in the Canadian province of Ontario. Hamilton has a population of 569,353 as of the 2021 Canadian census, and its census metropolitan area, which encompasses Burlington and Grimsby, has a population of 785,184. via Wikipedia
How today compares
Latest recorded day: 2026-07-24. Each reading placed on Hamilton, Ontario, Canada's own ±7-day seasonal distribution.
Hamilton average temperatures by month
Typical daily high and low, and average precipitation, for each month in Hamilton, 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 | -1°C | -7°C | 3 mm |
| February | 0°C | -6°C | 3 mm |
| March | 5°C | -3°C | 3 mm |
| April | 11°C | 3°C | 3 mm |
| May | 17°C | 8°C | 3 mm |
| June | 23°C | 15°C | 3 mm |
| July | 26°C | 18°C | 3 mm |
| August | 25°C | 18°C | 3 mm |
| September | 22°C | 14°C | 3 mm |
| October | 15°C | 8°C | 3 mm |
| November | 8°C | 2°C | 3 mm |
| December | 2°C | -3°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.
Thinking of visiting Hamilton?
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Record extremes
- Hottest day on record: 35°C on 1988-07-08
- Coldest day on record: -27°C on 2015-02-16
Percentiles compare each day to Hamilton, 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 →