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
South Cle Elum's December weather, marked by an average high temperature of 29.7°F (-1.3°C) and an average low temperature of 18.3°F (-7.6°C), is the coldest in the year.Humidity
The average relative humidity in December is 91%.Rainfall
In December, in South Cle Elum, Washington, the rain falls for 12.1 days. Throughout December, 4.17" (106mm) of precipitation is accumulated. Throughout the year, in South Cle Elum, there are 161.2 rainfall days, and 28.46" (723mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In December, it is snowing for 15.1 days. Throughout December, 15.24" (387mm) of snow is accumulated. Throughout the year, there are 69.9 snowfall days, and 60.24" (1530mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 36min of daylight.On the first day of December, sunrise is at 7:30 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:24 pm PST.
Sunshine
The average sunshine in December in South Cle Elum is 3.7h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in South Cle Elum. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
What are the coldest months in South Cle Elum?
How cold is it in South Cle Elum in December?
What is the average humidity in December in South Cle Elum?
How much does it rain in South Cle Elum in December?
How much does it snow in South Cle Elum in December?
What is the month with the shortest days in South Cle Elum?
How many hours of daylight does South Cle Elum have in December?
What time are sunrise and sunset in December in South Cle Elum?
How many hours of sunshine does South Cle Elum have in December?
What are the months with the lowest UV index in South Cle Elum?
How high is the UV index in December in South Cle Elum?
Average temperature in December
South Cle Elum, WA
- Average high temperature in December: 29.7°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in December: 18.3°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (18.3°F).
Average pressure in December
South Cle Elum, WA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in December
South Cle Elum, WA
- Average wind speed in December: 4.2mph
The windiest month (with the highest average wind speed) is June (6.7mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).
Average humidity in December
South Cle Elum, WA
- Average humidity in December: 91%
The months with the highest relative humidity are January and February (92%).
The months with the lowest relative humidity are July and August (60%).
Average rainfall in December
South Cle Elum, WA
- Average rainfall in December: 4.17"
The wettest month (with the highest rainfall) is January (4.41").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in December
South Cle Elum, WA
- Average rainfall days in December: 12.1 days
The months with the highest number of rainy days are March and April (18.3 days).
The month with the least rainy days is August (5.5 days).
Average snowfall in December
South Cle Elum, WA
- Average snowfall in December: 15.24"
The month with the highest snowfall is January (16.3").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
South Cle Elum, WA
- Average snowfall days in December: 15.1 days
The month with the highest number of snowfall days is December (15.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
South Cle Elum, 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: 3h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
South Cle Elum, WA
- Average sunshine days in December: 10.2 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in December
South Cle Elum, WA
- Average UV index in December: 1
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 1).
Average cloud cover in December
South Cle Elum, WA
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in December
South Cle Elum, WA
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (3mi).
South Cle Elum, Washington, USA
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