Montreal weather in October
October in Montreal: cool, rainy, with clean air — a good time to visit.
#7 of 12 months in Montreal · #457 of 604 destinations to visit in October · comfort 66/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Montreal climate normals — October
| Daytime high | 14°C / 57°F | 🙂 cool |
|---|---|---|
| Nighttime low | 7°C / 44°F | |
| Feels like (high) | 11°C / 52°F | |
| Rainfall | 132 mm / 5.2 in | 🌧 rainy |
| Rainy days | 10 days | |
| Humidity | 75% | 💦 very humid |
| Dew point | 6°C / 43°F | |
| Sunshine | 6.8 h/day | |
| Daylight | 10.9 h | |
| Wind | 18 km/h / 11 mph | |
| Snowfall | 1.1 cm / 0.4 in | |
| Air quality (US AQI) | 34 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Montreal in October — FAQ
- Is October a good time to visit Montreal?
- October in Montreal: cool, rainy, with clean air — a good time to visit. It ranks #7 of 12 months for Montreal on SeasonMap's comfort score (66/100).
- What is the weather like in Montreal in October?
- In October, Montreal averages a daily high of 13.7°C and a low of 6.7°C, with about 131.9 mm of rain over roughly 10.4 rainy days.
- What is the air quality in Montreal in October?
- Montreal has a mean US Air Quality Index of about 34 in October.
- Does it snow in Montreal in October?
- Montreal sees roughly 1.1 cm of snowfall in October.