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 Woodruff Mill, the month of December registers the lowest temperatures, averaging 36°F (2.2°C) at the peak and 25.7°F (-3.5°C) at the lowest.Humidity
In December, the average relative humidity is 85%.Rainfall
In December, in Woodruff Mill, the rain falls for 10.8 days. Throughout December, 1.93" (49mm) of precipitation is accumulated. Throughout the year, there are 114.1 rainfall days, and 12.13" (308mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, September through December. In Woodruff Mill, in December, snow falls for 8.9 days, with typically accumulated 4.06" (103mm) of snow. Throughout the year, there are 33.8 snowfall days, and 19.69" (500mm) of snow is accumulated.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:26 am and sunset at 4:21 pm. On the last day of December, sunrise is at 7:45 am and sunset at 4:30 pm PST.
Sunshine
The average sunshine in December is 5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: An average UV index of 2 in December transforms into this advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is December?
What is the average humidity in December?
How many days 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?
When is the sunrise / sunset in December in Woodruff Mill?
How long on average sun shines in December in Woodruff Mill?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Woodruff Mill, WA
- Average high temperature in December: 36°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (36°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in December
Woodruff Mill, WA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).
Average wind speed in December
Woodruff Mill, WA
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest months (with the lowest average wind speed) are January and December (5.3mph).
Average humidity in December
Woodruff Mill, WA
- Average humidity in December: 85%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (47%).
Average rainfall in December
Woodruff Mill, WA
- Average rainfall in December: 1.93"
The wettest month (with the highest rainfall) is January (2.17").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Woodruff Mill, WA
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is March (13.8 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in December
Woodruff Mill, WA
- Average snowfall in December: 4.06"
The month with the highest snowfall is January (6.18").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in December
Woodruff Mill, WA
- Average snowfall days in December: 8.9 days
The month with the highest number of snowfall days is December (8.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Woodruff Mill, WA
- Average daylight in December: 8h and 4min
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: 5h and 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in December
Woodruff Mill, WA
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is July (26.3 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in December
Woodruff Mill, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Woodruff Mill, WA
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in December
Woodruff Mill, WA
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Woodruff Mill, Washington, USA
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