Calgary weather in December
December in Calgary: freezing, dry, with clean air — one of the weakest months to visit.
#12 of 12 months in Calgary · #557 of 604 destinations to visit in December · comfort 34/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Calgary climate normals — December
| Daytime high | -3°C / 27°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -12°C / 10°F | |
| Feels like (high) | -7°C / 19°F | |
| Rainfall | 22 mm / 0.9 in | ☀️ dry |
| Rainy days | 6 days | |
| Humidity | 75% | 💧 humid |
| Dew point | -12°C / 10°F | |
| Sunshine | 4.8 h/day | |
| Daylight | 8 h | |
| Wind | 15 km/h / 10 mph | |
| Snowfall | 25.2 cm / 9.9 in | |
| Air quality (US AQI) | 35 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Calgary?
Loading map…
Calgary in December — FAQ
- Is December a good time to visit Calgary?
- December in Calgary: freezing, dry, with clean air — one of the weakest months to visit. It ranks #12 of 12 months for Calgary on SeasonMap's comfort score (34/100).
- What is the weather like in Calgary in December?
- In December, Calgary averages a daily high of -2.9°C and a low of -12.3°C, with about 22.4 mm of rain over roughly 5.6 rainy days.
- What is the air quality in Calgary in December?
- Calgary has a mean US Air Quality Index of about 35 in December.
- Does it snow in Calgary in December?
- Calgary sees roughly 25.2 cm of snowfall in December.