December weather forecastCougar, WA
December
Weather in December
December, the first month of the winter in Cougar, is still a cold month, with an average temperature ranging between max 40.6°F (4.8°C) and min 30.7°F (-0.7°C).Temperature
Cougar's December weather reaches an average high of 40.6°F (4.8°C) and an average low of 30.7°F (-0.7°C), making it the coldest month.Humidity
In December, the average relative humidity in Cougar is 86%.Rainfall
In Cougar, Washington, during December, the rain falls for 19.5 days and regularly aggregates up to 6.97" (177mm) of precipitation. In Cougar, during the entire year, the rain falls for 182.3 days and collects up to 48.11" (1222mm) of precipitation.Snowfall
Months with snowfall in Cougar are January through March, November and December. In Cougar, in December, snow falls for 2 days, with typically accumulated 1.14" (29mm) of snow. Throughout the year, in Cougar, there are 11.4 snowfall days, and 11.1" (282mm) of snow is accumulated.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year in Cougar.On the first day of the month, sunrise is at 7:31 am and sunset at 4:25 pm. On the last day of December, in Cougar, sunrise is at 7:51 am and sunset at 4:33 pm PST.
Sunshine
The average sunshine in December is 3.3h.UV index
In December, the average daily maximum UV index in Cougar is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cougar, WA
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (40.6°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (30.7°F).
Average pressure in December
Cougar, WA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in December
Cougar, WA
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is January (6.1mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Cougar, WA
- Average humidity in December: 86%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are July and August (69%).
Average rainfall in December
Cougar, WA
- Average rainfall in December: 6.97"
The wettest month (with the highest rainfall) is January (7.64").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in December
Cougar, WA
- Average rainfall days in December: 19.5 days
The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (5.6 days).
Average snowfall in December
Cougar, WA
- Average snowfall in December: 1.14"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Cougar, WA
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is February (4.2 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
Cougar, WA
- Average daylight in December: 8h and 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 3h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in December
Cougar, WA
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is August (23.4 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in December
Cougar, WA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in December
Cougar, WA
- Average cloud cover in December: 66
The months with the most cloud cover are February and December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Cougar, WA
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
