Fort Saint John
Canada
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Fort Saint John, Canada

The first month of the winter, December, is still a freezing cold month in Fort Saint John, Canada, with average temperature fluctuating between -7.4°C (18.7°F) and -15.3°C (4.5°F).

Temperature

In Fort Saint John, the average high-temperature in December marginally drops, from a subzero cold -2.9°C (26.8°F) in November, to a still freezing cold -7.4°C (18.7°F). In Fort Saint John, in December, the average low-temperature is -15.3°C (4.5°F).

Humidity

In Fort Saint John, the average relative humidity in December is 71.5%.

Rainfall

In Fort Saint John, Canada, in December, it is raining for 0.6 days, with typically 0.7mm (0") of accumulated precipitation. Throughout the year, there are 66 rainfall days, and 292.4mm (11.5") of precipitation is accumulated.

Snowfall

January through May, August through December are months with snowfall. In Fort Saint John, snow falls for 9.5 days, with typically accumulated 268mm (10.6") of snow. Throughout the year, in Fort Saint John, there are 60.3 snowfall days, and 1896mm (74.6") of snow is accumulated.

Daylight

December has the shortest days of the year in Fort Saint John, with an average of 7h of daylight.

Sunshine

With an average of 1.7h of sunshine, December has the least sunshine of the year.

UV index

January, November and December, with an average maximum UV index of 0, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 0 translate into the following recommendations:
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. 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 Fort Saint John?

The average high-temperature, in December, in Fort Saint John, Canada, is -7.4°C (18.7°F), while the average low-temperature is -15.3°C (4.5°F).

What is the average humidity in December in Fort Saint John?

In Fort Saint John, Canada, the average relative humidity in December is 71.5%.

How many days does it rain in December in Fort Saint John?

In Fort Saint John, Canada, in December, it is raining for 0.6 days, with typically 0.7mm (0") of accumulated precipitation.

How much does it snow in Fort Saint John in December?

In December, in Fort Saint John, it is snowing for 9.5 days. Throughout December, 268mm (10.6") of snow is accumulated.

What is the month with the shortest days in Fort Saint John?

With an average of 7h of daylight, December has the shortest days of the year.

What is the average length of the day in December in Fort Saint John?

In Fort Saint John, Canada, the average length of the day in December is 7h.

What is the month with the least sunshine in Fort Saint John?

The month with the least sunshine in Fort Saint John, Canada, is December, with an average of 1.7h of sunshine.

How many hours of sunshine does Fort Saint John have in December?

The average sunshine in December is 1.7h.

What are the months with the lowest UV index in Fort Saint John?

January, November and December, with an average maximum UV index of 0, are months with the lowest UV index in Fort Saint John.

How high is the UV index in December in Fort Saint John?

In December, the average daily maximum UV index is 0. A UV Index estimate of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays.
Average temperature in December - Fort Saint John, Canada
  • Average high temperature in December: -7.4°C

The warmest month (with the highest average high temperature) is July (21.7°C).
The month with the lowest average high temperature is January (-8.7°C).

  • Average low temperature in December: -15.3°C

The month with the highest average low temperature is July (10.7°C).
The coldest month (with the lowest average low temperature) is January (-16.9°C).

Average humidity in December - Fort Saint John, Canada
  • Average humidity in December: 71.5%

The month with the highest relative humidity is November (72.3%).
The month with the lowest relative humidity is May (41.1%).

Average rainfall in December - Fort Saint John, Canada
  • Average rainfall in December: 0.7mm

The wettest month (with the highest rainfall) is July (75.2mm).
Driest months (with the lowest rainfall) are January and February (0.4mm).

Average rainfall days in December - Fort Saint John, Canada
  • Average rainfall days in December: 0.6 days

The month with the highest number of rainy days is July (12.9 days).
The month with the lowest number of rainy days is February (0.4 days).

Average snowfall in December - Fort Saint John, Canada
  • Average snowfall in December: 268mm

The month with the highest snowfall is January (327mm).
Months with the lowest snowfall are June and July (0mm).

Average snowfall days in December - Fort Saint John, Canada
  • Average snowfall days in December: 9.5 days

The month with the highest number of snowfall days is January (10.8 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight in December / Average sunshine in December - Fort Saint John, Canada
  • Average daylight in December: 7h

The month with the longest days is June (Average daylight: 17.6h).
The month with shortest days is December (Average daylight: 7h).

  • Average sunshine in December: 1.7h

The month with most sunshine is July (Average sunshine: 9.3h).
The month with least sunshine is December (Average sunshine: 1.7h).

Average UV index in December - Fort Saint John, Canada
  • Average UV index in December: 0

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, November and December (UV index 0).