Weather in Montréal in August
In an average August, Montréal sees a daily high around 25°C and a low around 16°C, based on 1980–2026 of local climate records.
| Average high | 25°C |
|---|---|
| Typical high range | 21°C to 29°C |
| Average low | 16°C |
| Typical low range | 11°C to 20°C |
| Average daily precipitation | 3 mm |
August records
The most extreme August on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total August accumulation.
High
Highest
36°C
2001-08-09
Lowest
15°C
1985-08-30
Low
Highest
25°C
1988-08-04
Lowest
5°C
1986-08-29
Feels-like
Highest
54°C
2006-08-01
Lowest
2°C
1986-08-29
Humidity
Highest
22.8 g/m³
2006-08-01
Lowest
5.9 g/m³
1989-08-25
Wind
Highest
46 km/h
2011-08-28
Lowest
5 km/h
2020-08-01
Gust
Highest
90 km/h
2011-08-28
Lowest
13 km/h
2017-08-27
Precip
Wettest
226 mm
2024
Driest
30 mm
2002
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