December weather forecastFort Simpson, Canada
December
Weather in December
December, the first month of the winter in Fort Simpson, is also an arctic cold month, with an average temperature ranging between min -23.5°C (-10.3°F) and max -17.4°C (0.7°F).Temperature
The start of December comes with a reduction in the average high-temperature, receding from a frigid cold -10.7°C (12.7°F) in November to an arctic cold -17.4°C (0.7°F). Fort Simpson's nighttime temperature in December falls to an average of -23.5°C (-10.3°F).Humidity
In Fort Simpson, the average relative humidity in December is 95%.Rainfall
The month with the least rainfall in Fort Simpson is December, when the rain falls for 0.8 days and typically collects 4mm (0.16") of precipitation.Snowfall
Months with snowfall are January through June, September through December. In Fort Simpson, Canada, in December, during 9 snowfall days, 29mm (1.14") of snow is typically accumulated. Throughout the year, in Fort Simpson, there are 75.9 snowfall days, and 452mm (17.8") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 5h and 24min of daylight.On the first day of the month, sunrise is at 9:59 am and sunset at 3:50 pm. On the last day of December, sunrise is at 10:26 am and sunset at 3:51 pm MST.
Sunshine
The average sunshine in December in Fort Simpson is 2.3h.UV index
January through March, October through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Fort Simpson, Canada
- Average high temperature in December: -17.4°C
The warmest month (with the highest average high temperature) is July (24°C).
The month with the lowest average high temperature is January (-17.9°C).
- Average low temperature in December: -23.5°C
The month with the highest average low temperature is July (12°C).
The coldest month (with the lowest average low temperature) is January (-24.8°C).
Average pressure in December
Fort Simpson, Canada
- Average pressure in December: 1018.8mbar
The month with the highest atmospheric pressure is February (1020.3mbar).
The month with the lowest atmospheric pressure is August (1010mbar).
Average wind speed in December
Fort Simpson, Canada
- Average wind speed in December: 7.5km/h
The windiest month (with the highest average wind speed) is May (9.6km/h).
The calmest month (with the lowest average wind speed) is December (7.5km/h).
Average humidity in December
Fort Simpson, Canada
- Average humidity in December: 95%
The month with the highest relative humidity is January (96%).
The month with the lowest relative humidity is June (53%).
Average rainfall in December
Fort Simpson, Canada
- Average rainfall in December: 4mm
The wettest month (with the highest rainfall) is August (37mm).
The driest month (with the least rainfall) is December (4mm).
Average rainfall days in December
Fort Simpson, Canada
- Average rainfall days in December: 0.8 days
The month with the highest number of rainy days is August (11.1 days).
The month with the least rainy days is November (0.2 days).
Average snowfall in December
Fort Simpson, Canada
- Average snowfall in December: 29mm
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
Fort Simpson, Canada
- Average snowfall days in December: 9 days
The month with the highest number of snowfall days is March (13 days).
The month with the least snowfall days is July (0 days).
Average daylight in December /
Average sunshine in December
Fort Simpson, Canada
- Average daylight in December: 5h and 24min
The month with the longest days is June (Average daylight: 19h and 30min).
The month with the shortest days is December (Average daylight: 5h and 24min).
- Average sunshine in December: 2h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 12min).
Average sunshine days in December
Fort Simpson, Canada
- Average sunshine days in December: 23.5 days
The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is April (14.3 days).
Average UV index in December
Fort Simpson, Canada
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in December
Fort Simpson, Canada
- Average cloud cover in December: 64
The months with the most cloud cover are March and April (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in December
Fort Simpson, Canada
- Average visibility in December: 4km
The months with the highest visibility are June and July (10km).
The months with the lowest visibility are January, February, March and December (4km).
