December weather forecastSudden Valley, WA
December
Weather in December
The first month of the winter, December, is still a cold month in Sudden Valley, Washington, with an average temperature ranging between min 34.3°F (1.3°C) and max 41.7°F (5.4°C).Temperature
The coldest time of the year is December, with temperatures averaging a high of 41.7°F (5.4°C) and a low of 34.3°F (1.3°C).Humidity
In December, the average relative humidity in Sudden Valley is 83%.Rainfall
In Sudden Valley, Washington, in December, it is raining for 11.3 days, with typically 0.98" (25mm) of accumulated precipitation. Throughout the year, there are 104.5 rainfall days, and 7.01" (178mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Sudden Valley, Washington, during December, snow falls for 2 days and regularly aggregates up to 0.08" (2mm) of snow. In Sudden Valley, during the entire year, snow falls for 10.9 days and aggregates up to 1.65" (42mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 24min of daylight.On the first day of the month, sunrise is at 7:41 am and sunset at 4:15 pm. On the last day of December, in Sudden Valley, sunrise is at 8:02 am and sunset at 4:23 pm PST.
Sunshine
January and December, with an average of 4.2h of sunshine, are months with the least sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sudden Valley. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 2 during December translates into the following guidance:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sudden Valley, WA
- Average high temperature in December: 41.7°F
The warmest month (with the highest average high temperature) is August (71.1°F).
The month with the lowest average high temperature is December (41.7°F).
- Average low temperature in December: 34.3°F
The month with the highest average low temperature is August (52.7°F).
The coldest months (with the lowest average low temperature) are February and December (34.3°F).
Average pressure in December
Sudden Valley, WA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in December
Sudden Valley, WA
- Average wind speed in December: 5.8mph
The windiest months (with the highest average wind speed) are November and December (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in December
Sudden Valley, WA
- Average humidity in December: 83%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (74%).
Average rainfall in December
Sudden Valley, WA
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is January (1.1").
The driest months (with the least rainfall) are July and August (0.2").
Average rainfall days in December
Sudden Valley, WA
- Average rainfall days in December: 11.3 days
The month with the highest number of rainy days is November (13.6 days).
The month with the least rainy days is August (3.1 days).
Average snowfall in December
Sudden Valley, WA
- Average snowfall in December: 0.08"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Sudden Valley, WA
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is February (3.4 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
Sudden Valley, WA
- Average daylight in December: 8h and 24min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 4h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in December
Sudden Valley, WA
- Average sunshine days in December: 14 days
The month with the most sunshine days is August (24.9 days).
The month with the least sunshine days is November (11.3 days).
Average UV index in December
Sudden Valley, 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
Sudden Valley, WA
- Average cloud cover in December: 56
The months with the most cloud cover are January, February, March and December (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 26).
Average visibility in December
Sudden Valley, WA
- Average visibility in December: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
