Calgary
Canada
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Calgary, Canada

A view of the magnificent skyscrapers of the city of Calgary, Canada, on a mildly sunny day
A view of the magnificent skyscrapers of the city of Calgary, Canada, on a mildly sunny day
The first month of the winter, December, is also a subzero cold month in Calgary, Canada, with temperature in the range of an average low of -12.8°C (9°F) and an average high of -0.8°C (30.6°F).

Temperature

In Calgary, Canada, the average high-temperature in December marginally drops, from a cold 3.4°C (38.1°F) in November, to a freezing cold -0.8°C (30.6°F). In December, the average low-temperature is -12.8°C (9°F).

Humidity

December is the most humid month, with an average relative humidity of 55.3%.

Rainfall

In December, in Calgary, the rain falls for 0.4 days. Throughout December, 0.3mm (0") of precipitation is accumulated. In Calgary, during the entire year, the rain falls for 68 days and collects up to 326.7mm (12.9") of precipitation.

Snowfall

Months with snowfall are January through June, September through December. In December, in Calgary, it is snowing for 7.7 days. Throughout December, 150mm (5.9") of snow is accumulated. Throughout the year, in Calgary, there are 54.3 snowfall days, and 1288mm (50.7") of snow is accumulated.

Daylight

The month with the shortest days in Calgary is December, with an average of 8h of daylight.

Sunshine

The month with the least sunshine in Calgary is December, with an average of 3.7h of sunshine.

UV index

December is the month with the lowest UV index in Calgary, with an average maximum UV index of 0. A UV Index of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 0 transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Calgary?

The average high-temperature, in December, in Calgary, Canada, is -0.8°C (30.6°F), while the average low-temperature is -12.8°C (9°F).

What is the most humid month in Calgary?

With an average relative humidity of 55.3%, December is the most humid month.

What is the average humidity in December in Calgary?

The average relative humidity in December in Calgary, Canada, is 55.3%.

How many days does it rain in December in Calgary?

In Calgary, in December, it is raining for 0.4 days, with typically 0.3mm (0") of accumulated precipitation.

How many days does it snow in December in Calgary?

In Calgary, Canada, in December, snow falls for 7.7 days, with typically accumulated 150mm (5.9") of snow.

What is the month with the shortest days in Calgary?

The month with the shortest days in Calgary, Canada, is December, with an average of 8h of daylight.

What is the average length of the day in December in Calgary?

The average length of the day in December in Calgary is 8h.

What is the month with the least sunshine in Calgary?

With an average of 3.7h of sunshine, December has the least sunshine of the year in Calgary.

How long on average sun shines in December in Calgary?

In Calgary, the average sunshine in December is 3.7h.

When is the lowest UV index in Calgary?

The month with the lowest UV index in Calgary is December, with an average maximum UV index of 0.

What is the UV index intensity in December in Calgary?

In Calgary, Canada, the average daily maximum UV index in December is 0. A UV Index value of 2, and less, symbolizes a minimal hazard to health from the exposure to the Sun's UV radiation.
Average temperature in December - Calgary, Canada
  • Average high temperature in December: -0.8°C

The warmest month (with the highest average high temperature) is July (23.2°C).
The month with the lowest average high temperature is January (-0.9°C).

  • Average low temperature in December: -12.8°C

The month with the highest average low temperature is July (9.8°C).
The coldest month (with the lowest average low temperature) is January (-13.2°C).

Average humidity in December - Calgary, Canada
  • Average humidity in December: 55.3%

The month with the highest relative humidity is December (55.3%).
The month with the lowest relative humidity is April (40.7%).

Average rainfall in December - Calgary, Canada
  • Average rainfall in December: 0.3mm

The wettest month (with the highest rainfall) is June (93.9mm).
Driest months (with the lowest rainfall) are January and February (0.1mm).

Average rainfall days in December - Calgary, Canada
  • Average rainfall days in December: 0.4 days

The month with the highest number of rainy days is June (13.8 days).
The month with the lowest number of rainy days is February (0.2 days).

Average snowfall in December - Calgary, Canada
  • Average snowfall in December: 150mm

The month with the highest snowfall is March (227mm).
Months with the lowest snowfall are July and August (0mm).

Average snowfall days in December - Calgary, Canada
  • Average snowfall days in December: 7.7 days

The month with the highest number of snowfall days is March (9.5 days).
The month with the lowest number of snowfall days is July (0 days).

Average daylight in December / Average sunshine in December - Calgary, Canada
  • Average daylight in December: 8h

The month with the longest days is June (Average daylight: 16.5h).
The month with shortest days is December (Average daylight: 8h).

  • Average sunshine in December: 3.7h

The month with most sunshine is July (Average sunshine: 10.1h).
The month with least sunshine is December (Average sunshine: 3.7h).

Average UV index in December - Calgary, Canada
  • Average UV index in December: 0

Months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 0).