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
Washington's December weather comes with a decrease in average high-temperatures, moving from a fresh 51.4°F (10.8°C) in November to a cold 41.9°F (5.5°C). In December, Washington encounters an average low-temperature of 30.7°F (-0.7°C) during the night.Humidity
The average relative humidity in December is 82%.Rainfall
In Washington, in December, during 12.5 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, there are 175.1 rainfall days, and 30.59" (777mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Washington, during December, snow falls for 9.2 days and regularly aggregates up to 1.93" (49mm) of snow. Throughout the year, there are 42.5 snowfall days, and 12.4" (315mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:27 am and sunset at 5:04 pm. On the last day of December, in Washington, sunrise is at 7:46 am and sunset at 5:13 pm EST.
Sunshine
In Washington, the average sunshine in December is 3.9h.UV index
The months with the lowest UV index in Washington, West Virginia, are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 2 in December leads to these recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Frequently asked questions
Is December cold in Washington?
What is the average humidity in December in Washington?
How many days does it rain in December in Washington?
How many days does it snow in December in Washington?
What is the month with the shortest days in Washington?
What is the average length of the day in December in Washington?
When is the sunrise / sunset in December in Washington?
How long on average sun shines in December in Washington?
What is the month with the lowest UV index in Washington?
What is the UV index intensity in December in Washington?
Average temperature in December
Washington, WV
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (36.3°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
Washington, WV
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Washington, WV
- Average wind speed in December: 6.3mph
The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Washington, WV
- Average humidity in December: 82%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (75%).
Average rainfall in December
Washington, WV
- Average rainfall in December: 2.72"
The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Washington, WV
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is November (10.4 days).
Average snowfall in December
Washington, WV
- Average snowfall in December: 1.93"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Washington, WV
- Average snowfall days in December: 9.2 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Washington, WV
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Washington, WV
- Average sunshine days in December: 11.1 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is February (9.2 days).
Average UV index in December
Washington, WV
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Washington, WV
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Washington, WV
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Washington, West Virginia, USA
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