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
Weather in December
Temperature
In Prairie Ridge, December is the coldest month, with temperatures averaging a high of 41.2°F (5.1°C) and a low of 31.3°F (-0.4°C).Humidity
In December, the average relative humidity is 86%.Rainfall
In Prairie Ridge, in December, during 20.1 rainfall days, 5.39" (137mm) of precipitation is typically accumulated. Throughout the year, there are 187.8 rainfall days, and 37.56" (954mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Prairie Ridge, Washington, in December, during 1.4 snowfall days, 0.55" (14mm) of snow is typically accumulated. In Prairie Ridge, during the entire year, snow falls for 10.5 days and aggregates up to 6.22" (158mm) of snow.Daylight
With an average of 8h and 36min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:35 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 4:29 pm PST.
Sunshine
The months with the least sunshine are January and December, with an average of 4.2h of sunshine.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
Is it cold during December?
What is the average humidity in December?
How much 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?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index in Prairie Ridge?
What is the UV index reading in December?
Average temperature in December
Prairie Ridge, WA
- Average high temperature in December: 41.2°F
The warmest month (with the highest average high temperature) is August (74.8°F).
The month with the lowest average high temperature is December (41.2°F).
- Average low temperature in December: 31.3°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (31.3°F).
Average pressure in December
Prairie Ridge, WA
- Average pressure in December: 30.09"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
Prairie Ridge, WA
- Average wind speed in December: 4.7mph
The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity in December
Prairie Ridge, WA
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
Prairie Ridge, WA
- Average rainfall in December: 5.39"
The wettest month (with the highest rainfall) is January (5.47").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in December
Prairie Ridge, WA
- Average rainfall days in December: 20.1 days
The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (6.7 days).
Average snowfall in December
Prairie Ridge, WA
- Average snowfall in December: 0.55"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Prairie Ridge, WA
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is February (3.9 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
Prairie Ridge, WA
- Average daylight in December: 8h and 4min
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 36min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in December
Prairie Ridge, WA
- Average sunshine days in December: 9.7 days
The month with the most sunshine days is August (22.4 days).
The month with the least sunshine days is February (7.9 days).
Average UV index in December
Prairie Ridge, 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, October, November and December (UV index 2).
Average cloud cover in December
Prairie Ridge, WA
- Average cloud cover in December: 58
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in December
Prairie Ridge, WA
- Average visibility in December: 4mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Prairie Ridge, Washington, USA
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