Fort Simpson
Canada
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Fort Simpson, Canada

The first month of the winter, December, is still a polar cold month in Fort Simpson, Canada, with average temperature ranging between min -25.9°C (-14.6°F) and max -17.5°C (0.5°F).

Temperature

In December, the average high-temperature decreases, from a frigid cold -11.5°C (11.3°F) in November, to an arctic cold -17.5°C (0.5°F). The average low-temperature, in Fort Simpson, is -25.9°C (-14.6°F).

Humidity

In Fort Simpson, the average relative humidity in December is 81.1%.

Rainfall

In Fort Simpson, Canada, rain does not fall in February and December.

Snowfall

January through June, August through December are months with snowfall. In Fort Simpson, Canada, 243mm (9.6") of snow is typically accumulated. Throughout the year, 1871mm (73.7") of snow is accumulated.

Daylight

With an average of 5.4h of daylight, December has the shortest days of the year.

Sunshine

December has the least sunshine of the year in Fort Simpson, with an average of 1h of sunshine.

UV index

Months with the lowest UV index in Fort Simpson are January, February, November and December, with an average maximum UV index of 0. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 0 in December interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 Fort Simpson?

In Fort Simpson, in December, the average high-temperature is -17.5°C (0.5°F), and the average low-temperature is -25.9°C (-14.6°F).

What is the average humidity in December in Fort Simpson?

The average relative humidity in December in Fort Simpson, Canada, is 81.1%.

Does it rain in Fort Simpson in December?

In December, it doesn't rain. November is the latest month when it rains.

What is the driest month in Fort Simpson?

In Fort Simpson, Canada, rain does not fall in February and December.

How much does it snow in Fort Simpson in December?

Throughout December, in Fort Simpson, Canada, 243mm (9.6") of snow is accumulated.

What is the month with the shortest days in Fort Simpson?

With an average of 5.4h of daylight, December has the shortest days of the year in Fort Simpson.

What is the average length of the day in December in Fort Simpson?

In December, the average length of the day in Fort Simpson, Canada, is 5.4h.

What is the month with the least sunshine in Fort Simpson?

With an average of 1h of sunshine, December has the least sunshine of the year in Fort Simpson.

How long on average sun shines in December in Fort Simpson?

The average sunshine in December in Fort Simpson, Canada, is 1h.

When is the lowest UV index in Fort Simpson?

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 0.

How high is the UV index in December in Fort Simpson?

The average daily maximum UV index in December in Fort Simpson, Canada, is 0. A UV Index reading of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV rays.
Average temperature in December - Fort Simpson, Canada
  • Average high temperature in December: -17.5°C

The warmest month (with the highest average high temperature) is July (23.7°C).
The month with the lowest average high temperature is January (-19.8°C).

  • Average low temperature in December: -25.9°C

The month with the highest average low temperature is July (11.2°C).
The coldest month (with the lowest average low temperature) is January (-28.5°C).

Average humidity in December - Fort Simpson, Canada
  • Average humidity in December: 81.1%

The month with the highest relative humidity is November (83.2%).
The month with the lowest relative humidity is May (43.6%).

Average rainfall in December - Fort Simpson, Canada
  • Average rainfall in December: 0mm

The wettest month (with the highest rainfall) is July (61.1mm).
Driest months (with the lowest rainfall) are February and December (0mm).

Average rainfall days in December - Fort Simpson, Canada
  • Average rainfall days in December: 0 days

The month with the highest number of rainy days is July (12.1 days).
The month with the lowest number of rainy days is December (0 days).

Average snowfall in December - Fort Simpson, Canada
  • Average snowfall in December: 243mm

The month with the highest snowfall is November (334mm).
The month with the lowest snowfall is July (0mm).

Average snowfall days in December - Fort Simpson, Canada
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is July (3.5 days).
Months with the lowest number of snowfall days are January, February, March, November and December (0 days).

Average daylight in December / Average sunshine in December - Fort Simpson, Canada
  • Average daylight in December: 5.4h

The month with the longest days is June (Average daylight: 19.5h).
The month with shortest days is December (Average daylight: 5.4h).

  • Average sunshine in December: 1h

The month with most sunshine is June (Average sunshine: 10.4h).
The month with least sunshine is December (Average sunshine: 1h).

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

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 0).