December weather forecastCarnation, WA
December
Weather in December
The first month of the winter, December, is also a wintry month in Carnation, Washington, with an average temperature varying between 32.2°F (0.1°C) and 41.4°F (5.2°C).Temperature
Carnation's December weather reaches an average high of 41.4°F (5.2°C) and an average low of 32.2°F (0.1°C), making it the coldest month.Humidity
January, February and December, with an average relative humidity of 86%, are the most humid months.Rainfall
The month with the most rainfall is December, when the rain falls for 14.1 days and typically aggregates up to 2.6" (66mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Carnation, in December, during 1.6 snowfall days, 0.35" (9mm) of snow is typically accumulated. Throughout the year, in Carnation, there are 8.4 snowfall days, and 3.5" (89mm) of snow is accumulated.Daylight
December has the shortest days of the year in Carnation, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 7:35 am and sunset at 4:18 pm. On the last day of December, in Carnation, Washington, sunrise is at 7:55 am and sunset at 4:26 pm PST.
Sunshine
With an average of 3.9h of sunshine, December has the least sunshine of the year in Carnation.UV index
The months with the lowest UV index in Carnation are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Carnation, WA
- Average high temperature in December: 41.4°F
The warmest month (with the highest average high temperature) is August (75.7°F).
The month with the lowest average high temperature is December (41.4°F).
- Average low temperature in December: 32.2°F
The month with the highest average low temperature is August (50.2°F).
The coldest month (with the lowest average low temperature) is December (32.2°F).
Average pressure in December
Carnation, WA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in December
Carnation, WA
- Average wind speed in December: 4.5mph
The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in December
Carnation, WA
- Average humidity in December: 86%
The months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is July (71%).
Average rainfall in December
Carnation, WA
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is December (2.6").
The driest months (with the least rainfall) are July and August (0.31").
Average rainfall days in December
Carnation, WA
- Average rainfall days in December: 14.1 days
The month with the highest number of rainy days is March (15.8 days).
The month with the least rainy days is August (4.8 days).
Average snowfall in December
Carnation, WA
- Average snowfall in December: 0.35"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Carnation, WA
- Average snowfall days in December: 1.6 days
The month with the highest number of snowfall days is February (2.7 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
Carnation, WA
- Average daylight in December: 8h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 3h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in December
Carnation, WA
- Average sunshine days in December: 15.4 days
The month with the most sunshine days is August (24.1 days).
The month with the least sunshine days is February (12.6 days).
Average UV index in December
Carnation, WA
- 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, November and December (UV index 2).
Average cloud cover in December
Carnation, WA
- Average cloud cover in December: 59
The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Carnation, WA
- Average visibility in December: 4mi
The months with the highest visibility are July and August (6mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
