December weather forecastFort Saint John, Canada
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Fort Saint John, Canada, with an average temperature varying between -16°C (3.2°F) and -9.2°C (15.4°F).Temperature
December, known for its average high temperature of -9.2°C (15.4°F) and an average low temperature of -16°C (3.2°F), is the coldest month.Humidity
In December, the average relative humidity is 92%.Rainfall
In December, in Fort Saint John, Canada, the rain falls for 1.5 days. Throughout December, 14mm (0.55") of precipitation is accumulated. In Fort Saint John, Canada, during the entire year, the rain falls for 103.7 days and collects up to 370mm (14.57") of precipitation.Snowfall
January through June, September through December are months with snowfall in Fort Saint John, Canada. In Fort Saint John, Canada, in December, during 12.2 snowfall days, 106mm (4.17") of snow is typically accumulated. In Fort Saint John, during the entire year, snow falls for 92.4 days and aggregates up to 928mm (36.54") of snow.Daylight
The month with the shortest days is December, with an average of 7h and 0min of daylight.On the first day of December, sunrise is at 9:13 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 9:36 am and sunset at 4:37 pm MST.
Sunshine
The average sunshine in December is 2.8h.UV index
The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Fort Saint John, Canada
- Average high temperature in December: -9.2°C
The warmest month (with the highest average high temperature) is July (22.2°C).
The month with the lowest average high temperature is December (-9.2°C).
- Average low temperature in December: -16°C
The month with the highest average low temperature is July (9.1°C).
The coldest month (with the lowest average low temperature) is December (-16°C).
Average pressure in December
Fort Saint John, Canada
- Average pressure in December: 1018.3mbar
The month with the highest atmospheric pressure is February (1019.3mbar).
The month with the lowest atmospheric pressure is June (1010.6mbar).
Average wind speed in December
Fort Saint John, Canada
- Average wind speed in December: 8.6km/h
The windiest months (with the highest average wind speed) are September and October (9.9km/h).
The calmest month (with the lowest average wind speed) is March (8.5km/h).
Average humidity in December
Fort Saint John, Canada
- Average humidity in December: 92%
The months with the highest relative humidity are January and March (94%).
The month with the lowest relative humidity is May (61%).
Average rainfall in December
Fort Saint John, Canada
- Average rainfall in December: 14mm
The wettest month (with the highest rainfall) is June (66mm).
The driest month (with the least rainfall) is February (12mm).
Average rainfall days in December
Fort Saint John, Canada
- Average rainfall days in December: 1.5 days
The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is December (1.5 days).
Average snowfall in December
Fort Saint John, Canada
- Average snowfall in December: 106mm
The month with the highest snowfall is November (158mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in December
Fort Saint John, Canada
- Average snowfall days in December: 12.2 days
The month with the highest number of snowfall days is January (15.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Fort Saint John, Canada
- Average daylight in December: 7h and 0min
The month with the longest days is June (Average daylight: 17h and 36min).
The month with the shortest days is December (Average daylight: 7h and 0min).
- Average sunshine in December: 2h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in December
Fort Saint John, Canada
- Average sunshine days in December: 19 days
The month with the most sunshine days is December (19 days).
The month with the least sunshine days is April (11 days).
Average UV index in December
Fort Saint John, Canada
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in December
Fort Saint John, Canada
- Average cloud cover in December: 61
The month with the most cloud cover is March (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Fort Saint John, Canada
- Average visibility in December: 5km
The months with the highest visibility are May, June, July, August and September (9km).
The months with the lowest visibility are January, February, March and December (5km).
