Montreal weather in December
December in Montreal: freezing, rainy, with clean air — not the best time to visit.
#10 of 12 months in Montreal · #547 of 604 destinations to visit in December · comfort 37/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Montreal climate normals — December
| Daytime high | 0°C / 32°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -6°C / 20°F | |
| Feels like (high) | -5°C / 23°F | |
| Rainfall | 96 mm / 3.8 in | 🌧 rainy |
| Rainy days | 12 days | |
| Humidity | 78% | 💦 very humid |
| Dew point | -6°C / 21°F | |
| Sunshine | 4.5 h/day | |
| Daylight | 8.8 h | |
| Wind | 20 km/h / 12 mph | |
| Snowfall | 28.1 cm / 11.1 in | |
| Air quality (US AQI) | 42 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Montreal in December — FAQ
- Is December a good time to visit Montreal?
- December in Montreal: freezing, rainy, with clean air — not the best time to visit. It ranks #10 of 12 months for Montreal on SeasonMap's comfort score (37/100).
- What is the weather like in Montreal in December?
- In December, Montreal averages a daily high of -0.1°C and a low of -6.4°C, with about 96.3 mm of rain over roughly 12.4 rainy days.
- What is the air quality in Montreal in December?
- Montreal has a mean US Air Quality Index of about 42 in December.
- Does it snow in Montreal in December?
- Montreal sees roughly 28.1 cm of snowfall in December.