December weather forecastEltopia, WA
December
Weather in December
The first month of the winter, December, is still a cold month in Eltopia, Washington, with an average temperature fluctuating between 37.8°F (3.2°C) and 27.7°F (-2.4°C).Temperature
December is the coldest month, with an average high-temperature of 37.8°F (3.2°C) and an average low-temperature of 27.7°F (-2.4°C).Humidity
The average relative humidity in December is 78%.Rainfall
In December, the rain falls for 10.8 days. Throughout December, 0.91" (23mm) of precipitation is accumulated. In Eltopia, during the entire year, the rain falls for 101.7 days and collects up to 7.36" (187mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Eltopia, during December, snow falls for 3.2 days and regularly aggregates up to 0.91" (23mm) of snow. Throughout the year, there are 11 snowfall days, and 4.53" (115mm) 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 7:19 am and sunset at 4:10 pm. On the last day of December, sunrise is at 7:39 am and sunset at 4:19 pm PST.
Sunshine
The average sunshine in December is 5.5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Eltopia, WA
- Average high temperature in December: 37.8°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is December (37.8°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is December (27.7°F).
Average pressure in December
Eltopia, WA
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in December
Eltopia, WA
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (8.4mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).
Average humidity in December
Eltopia, WA
- Average humidity in December: 78%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is July (35%).
Average rainfall in December
Eltopia, WA
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is January (0.94").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in December
Eltopia, WA
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in December
Eltopia, WA
- Average snowfall in December: 0.91"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Eltopia, WA
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Eltopia, WA
- Average daylight in December: 8h and 42min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 5h and 30min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in December
Eltopia, WA
- Average sunshine days in December: 17.2 days
The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is February (14.7 days).
Average UV index in December
Eltopia, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Eltopia, WA
- Average cloud cover in December: 43
The month with the most cloud cover is January (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in December
Eltopia, WA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
