December weather forecastCalgary, Canada
December
Weather in December
Finally arriving in December, Calgary succumbs to the full force of winter, with temperatures plunging to -4.8°C (23.4°F). The city becomes a snowy landscape, with 78mm (3.07") of fresh snowfall covering the ground. Short daylight hours and long nights take center stage, creating a perfect atmosphere for holiday decorations. December, in its full glory, offers residents a picturesque white Christmas right out of storybooks.Temperature
December, with average temperatures reaching a high of -4.8°C (23.4°F) and a low of -11.5°C (11.3°F), is the coldest month.Humidity
In December, the average relative humidity in Calgary is 80%.Rainfall
In Calgary, in December, during 3 rainfall days, 10mm (0.39") of precipitation is typically accumulated. Throughout the year, there are 94.1 rainfall days, and 288mm (11.34") of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In Calgary, in December, snow falls for 12.2 days, with typically accumulated 78mm (3.07") of snow. Throughout the year, there are 75.3 snowfall days, and 629mm (24.76") of snow is accumulated.Daylight
With an average of 8h and 0min of daylight, December has the shortest days of the year in Calgary, Canada.On the first day of the month, sunrise is at 8:18 am and sunset at 4:32 pm. On the last day of December, in Calgary, sunrise is at 8:39 am and sunset at 4:39 pm MST.
Sunshine
With an average of 5.2h of sunshine, December has the least sunshine of the year in Calgary.UV index
In Calgary, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Calgary, Canada
- Average high temperature in December: -4.8°C
The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is December (-4.8°C).
- Average low temperature in December: -11.5°C
The month with the highest average low temperature is July (10°C).
The coldest month (with the lowest average low temperature) is December (-11.5°C).
Average pressure in December
Calgary, Canada
- Average pressure in December: 1019mbar
The month with the highest atmospheric pressure is February (1019.3mbar).
The month with the lowest atmospheric pressure is June (1010.8mbar).
Average wind speed in December
Calgary, Canada
- Average wind speed in December: 12km/h
The windiest month (with the highest average wind speed) is January (13.1km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).
Average humidity in December
Calgary, Canada
- Average humidity in December: 80%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is September (59%).
Average rainfall in December
Calgary, Canada
- Average rainfall in December: 10mm
The wettest month (with the highest rainfall) is June (65mm).
The driest month (with the least rainfall) is January (9mm).
Average rainfall days in December
Calgary, Canada
- Average rainfall days in December: 3 days
The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is November (2.5 days).
Average snowfall in December
Calgary, Canada
- Average snowfall in December: 78mm
The month with the highest snowfall is April (102mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in December
Calgary, Canada
- Average snowfall days in December: 12.2 days
The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Calgary, Canada
- Average daylight in December: 8h and 0min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in December: 5h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in December
Calgary, Canada
- Average sunshine days in December: 19.3 days
The month with the most sunshine days is October (22.1 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in December
Calgary, Canada
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Calgary, Canada
- Average cloud cover in December: 45
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Calgary, Canada
- Average visibility in December: 9km
The months with the highest visibility are June, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, July, October, November and December (9km).
