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
December, the first month of the winter, in Calgary, is still a freezing cold month, with average temperature ranging between min -12.8°C (9°F) and max -0.8°C (30.6°F).

Temperature

In December, the average high-temperature slightly decreases, from a wintry 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

The most humid month in Calgary, Canada, is December, 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. Throughout the year, in Calgary, there are 68 rainfall days, and 326.7mm (12.9") of precipitation is accumulated.

Snowfall

Months with snowfall in Calgary, Canada, are January through June, September through December.

Daylight

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

Sunshine

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

UV index

December is the month with the lowest UV index, with an average maximum UV index of 0. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays for average individuals.
The average daily UV index of 0 in December transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Calgary?

In Calgary, Canada, in December, the average high-temperature is -0.8°C (30.6°F), and 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?

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

How many days does it rain in December in Calgary?

In Calgary, in December, during 0.4 rainfall days, 0.3mm (0") of precipitation is typically accumulated.

How many days does it snow in December in Calgary?

In Calgary, in December, during 7.7 snowfall days, 150mm (5.9") of snow is typically accumulated.

What is the month with the shortest days in Calgary?

With an average of 8h of daylight, December has the shortest days of the year in Calgary, Canada.

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

In December, the average length of the day in Calgary, Canada, is 8h.

What is the month with the least sunshine in Calgary?

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

How many hours of sunshine does Calgary have in December?

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, the average daily maximum UV index in December is 0. A UV Index value of 2, and less, symbolizes a low health threat 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).