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
The month of December, characterized by an average high of 36.5°F (2.5°C) and a low of 26.6°F (-3°C), is recognized as the coldest.Humidity
The average relative humidity in December is 82%.Rainfall
In Roosevelt, in December, during 11 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In Roosevelt, Washington, during the entire year, the rain falls for 107.9 days and collects up to 8.46" (215mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Roosevelt, during December, snow falls for 4.8 days and regularly aggregates up to 2.2" (56mm) of snow. Throughout the year, there are 15.8 snowfall days, and 9.69" (246mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 7:22 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:26 pm PST.
Sunshine
The average sunshine in December in Roosevelt is 5.4h.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 value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
What month is the coldest in Roosevelt?
How cold is December in Roosevelt?
What is the average humidity in December in Roosevelt?
How many days does it rain in December in Roosevelt?
How much does it snow in Roosevelt in December?
What is the month with the shortest days in Roosevelt?
How many hours of daylight does Roosevelt have in December?
What time are sunrise and sunset in December in Roosevelt?
How long on average sun shines in December in Roosevelt?
What are the months with the lowest UV index in Roosevelt?
What is the UV index intensity in December in Roosevelt?
Average temperature in December
Roosevelt, WA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in December: 26.6°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (26.6°F).
Average pressure in December
Roosevelt, WA
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in December
Roosevelt, WA
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is June (9.2mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).
Average humidity in December
Roosevelt, WA
- Average humidity in December: 82%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (40%).
Average rainfall in December
Roosevelt, WA
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is January (1.1").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in December
Roosevelt, WA
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is July (4.4 days).
Average snowfall in December
Roosevelt, WA
- Average snowfall in December: 2.2"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Roosevelt, WA
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is December (4.8 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Roosevelt, 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 2min
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: 5h and 12min).
Average sunshine days in December
Roosevelt, WA
- Average sunshine days in December: 15.3 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (14 days).
Average UV index in December
Roosevelt, WA
- Average UV index in December: 2
The months with the highest UV index are June and 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
Roosevelt, WA
- Average cloud cover in December: 46
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in December
Roosevelt, WA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Roosevelt, Washington, USA
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