Calgary Weather in December
During December, Calgary experiences very low daytime temperatures of -1°C (30°F) and cooler nights around -12°C (10°F). As part of the winter season, some snowfall is to be expected.
Rainfall in Calgary in December
Analyzing past climate data, one can expect approximately 7 days of snow, averaging 18 mm (0.7 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Calgary in December
Expect highs of -1°C (30°F) in Calgary in December, with nights dropping to around -12°C (10°F). During December, the winter season is in full swing. Cold conditions tend to persist from morning through evening, so be prepared for winter weather. With overnight lows of -12°C (10°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. Prepare for low temperatures this month by wearing plenty of layers. It's essential to stay warm in such cold conditions.
Sunshine in Calgary in December
The area enjoys a balanced 112 hours of sunlight, ensuring it's neither too overcast nor too sunny.December in Calgary can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Calgary's climate page.
Calgary Temperature in December
Min Temperature
-12°C (10°F)
Max Temperature
-1°C (30°F)
Chance of Rain
23%
Precipitation
18 mm (0.7 in)
Rainy days
7 days
Humidity
54%
Sunshine
112 hours
Percentage Sunshine
46%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Calgary typically stay consistent throughout December, with daily highs averaging around -1°C (30°F). Nights are very cold, with lows typically ranging from -15°C (5°F) to -10°C (14°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Calgary in December
Browse day-by-day weather records for Calgary spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Calgary historical weather extremes in December
Based on weather observations in Calgary between 1976 and 2025, these are the recorded extremes during December.
Best Places in Canada in December
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Calgary in December
We recommend you pack up your warm winter gear for Calgary in December. If you have insulated boots, thermal layers, and a heavy winter coat that can handle snow and freezing temperatures it's smart to bring them. Don't forget gloves, a warm hat, and a scarf. Almost no rain is expected, so no need to bring rain gear. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Calgary in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Calgary's climate page.
Temperature Rainfall Sunshine Humidity
See the full Calgary climate overview or explore weather in Canada.
