Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
Casummit Lake's weather in December is marked by a clear decrease in the average high-temperature, moving down from November's freezing cold -2.1°C (28.2°F) to a frigid cold -10.7°C (12.7°F). The average low-temperature, in December, is a polar cold -17.2°C (1°F).Humidity
In December, the average relative humidity is 93%.Rainfall
February and December are months with the least rain when the rain falls for 1.9 days and typically aggregates up to 21mm (0.83") of rain.Snowfall
January through May, September through December are months with snowfall. In Casummit Lake, during December, snow falls for 22.6 days and regularly aggregates up to 165mm (6.5") of snow. In Casummit Lake, during the entire year, snow falls for 140.1 days and aggregates up to 1265mm (49.8") of snow.Daylight
With an average of 7h and 54min of daylight, December has the shortest days of the year in Casummit Lake, Canada.On the first day of the month, sunrise is at 7:53 am and sunset at 4:03 pm. On the last day of December, sunrise is at 8:14 am and sunset at 4:10 pm CST.
Sunshine
In December, the average sunshine in Casummit Lake is 1.8h.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 of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 1 suggests these recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
What is the driest month?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Casummit Lake have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Casummit Lake, Canada
- Average high temperature in December: -10.7°C
The warmest month (with the highest average high temperature) is July (24.5°C).
The month with the lowest average high temperature is January (-12.9°C).
- Average low temperature in December: -17.2°C
The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is January (-20.9°C).
Average pressure in December
Casummit Lake, Canada
- Average pressure in December: 1018.9mbar
The month with the highest atmospheric pressure is February (1020.2mbar).
The month with the lowest atmospheric pressure is June (1010.9mbar).
Average wind speed in December
Casummit Lake, Canada
- Average wind speed in December: 10.6km/h
The windiest months (with the highest average wind speed) are September and October (11.9km/h).
The calmest month (with the lowest average wind speed) is December (10.6km/h).
Average humidity in December
Casummit Lake, Canada
- Average humidity in December: 93%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is May (63%).
Average rainfall in December
Casummit Lake, Canada
- Average rainfall in December: 21mm
The wettest month (with the highest rainfall) is June (68mm).
The driest months (with the least rainfall) are February and December (21mm).
Average rainfall days in December
Casummit Lake, Canada
- Average rainfall days in December: 1.9 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is January (1.5 days).
Average snowfall in December
Casummit Lake, Canada
- Average snowfall in December: 165mm
The month with the highest snowfall is March (235mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in December
Casummit Lake, Canada
- Average snowfall days in December: 22.6 days
The month with the highest number of snowfall days is January (24.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Casummit Lake, Canada
- Average daylight in December: 7h and 5min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in December: 1h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 1h and 12min).
Average sunshine days in December
Casummit Lake, Canada
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is September (15.7 days).
The month with the least sunshine days is March (5.6 days).
Average UV index in December
Casummit Lake, 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
Casummit Lake, Canada
- Average cloud cover in December: 83
The month with the most cloud cover is January (Cloud cover 89).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in December
Casummit Lake, Canada
- Average visibility in December: 6km
The months with the highest visibility are May, June, July, August and September (9km).
The months with the lowest visibility are January and February (5km).
