December weather forecastChilliwack, Canada
December
Weather in December
December in Chilliwack introduces the winter season, marked by plummeting temperatures and gradual snowfall. The cityscape gets adorned in shades of white, forecasting a winter wonderland. The festive season combines with an average snowfall of 70mm (2.76"), providing a quintessential white Christmas. The month concludes the climatic cycle, with sunlight scarcity and cold winds filling the air. December embraces the holiday spirit, curating perfect winter memories for residents and visitors.Temperature
December is the coldest month, with an average high-temperature of 1.3°C (34.3°F) and an average low-temperature of -3.4°C (25.9°F).Humidity
The average relative humidity in December is 89%.Rainfall
In Chilliwack, Canada, in December, during 18 rainfall days, 158mm (6.22") of precipitation is typically accumulated. Throughout the year, there are 198.9 rainfall days, and 1222mm (48.11") of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Chilliwack. In December, in Chilliwack, it is snowing for 3.9 days. Throughout December, 70mm (2.76") of snow is accumulated. Throughout the year, there are 20.1 snowfall days, and 375mm (14.76") of snow is accumulated.Daylight
With an average of 8h and 18min of daylight, December has the shortest days of the year in Chilliwack.On the first day of the month, sunrise is at 7:42 am and sunset at 4:12 pm. On the last day of December, sunrise is at 8:02 am and sunset at 4:19 pm PST.
Sunshine
The average sunshine in December is 3.6h.UV index
In Chilliwack, Canada, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Chilliwack, Canada
- Average high temperature in December: 1.3°C
The warmest month (with the highest average high temperature) is August (21.9°C).
The month with the lowest average high temperature is December (1.3°C).
- Average low temperature in December: -3.4°C
The month with the highest average low temperature is August (8.7°C).
The coldest month (with the lowest average low temperature) is December (-3.4°C).
Average pressure in December
Chilliwack, Canada
- Average pressure in December: 1019mbar
The month with the highest atmospheric pressure is January (1019.3mbar).
The month with the lowest atmospheric pressure is June (1015.6mbar).
Average wind speed in December
Chilliwack, Canada
- Average wind speed in December: 6.4km/h
The windiest months (with the highest average wind speed) are January and February (6.9km/h).
The calmest month (with the lowest average wind speed) is August (5km/h).
Average humidity in December
Chilliwack, Canada
- Average humidity in December: 89%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is July (74%).
Average rainfall in December
Chilliwack, Canada
- Average rainfall in December: 158mm
The wettest month (with the highest rainfall) is January (173mm).
The driest month (with the least rainfall) is August (31mm).
Average rainfall days in December
Chilliwack, Canada
- Average rainfall days in December: 18 days
The month with the highest number of rainy days is March (21.2 days).
The month with the least rainy days is August (10.2 days).
Average snowfall in December
Chilliwack, Canada
- Average snowfall in December: 70mm
The month with the highest snowfall is February (103mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Chilliwack, Canada
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Chilliwack, Canada
- Average daylight in December: 8h and 18min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in December: 3h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Chilliwack, Canada
- Average sunshine days in December: 10.7 days
The month with the most sunshine days is August (18.1 days).
The months with the least sunshine days are March and April (8 days).
Average UV index in December
Chilliwack, 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 and November (UV index 1).
Average cloud cover in December
Chilliwack, Canada
- Average cloud cover in December: 62
The month with the most cloud cover is March (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Chilliwack, Canada
- Average visibility in December: 6km
The months with the highest visibility are May, July and August (8km).
The months with the lowest visibility are January, February, March, November and December (6km).
