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
December implies a soft temperature shift, with average high-temperatures reducing from November's fresh 50.7°F (10.4°C) to an icy 42.4°F (5.8°C). During December, Greenville consistently records a temperature low averaging a subzero cold 29.3°F (-1.5°C).Humidity
In December, the average relative humidity is 82%.Rainfall
In Greenville, during December, the rain falls for 11.5 days and regularly aggregates up to 2.28" (58mm) of precipitation. Throughout the year, there are 165.3 rainfall days, and 25.35" (644mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Greenville, during December, snow falls for 5.9 days and regularly aggregates up to 2.68" (68mm) of snow. In Greenville, during the entire year, snow falls for 34.1 days and aggregates up to 14.61" (371mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:19 am and sunset at 5:04 pm. On the last day of December, sunrise is at 7:37 am and sunset at 5:14 pm EST.
Sunshine
The average sunshine in December is 4.5h.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 value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Experience reduced UV exposure by about half when donning a wide-brim hat. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Greenville have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Greenville have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Greenville, WV
- Average high temperature in December: 42.4°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (37.2°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in December
Greenville, WV
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Greenville, WV
- Average wind speed in December: 6.6mph
The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in December
Greenville, WV
- Average humidity in December: 82%
The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are June, July and November (78%).
Average rainfall in December
Greenville, WV
- Average rainfall in December: 2.28"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in December
Greenville, WV
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in December
Greenville, WV
- Average snowfall in December: 2.68"
The month with the highest snowfall is March (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Greenville, WV
- Average snowfall days in December: 5.9 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Greenville, WV
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 3min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Greenville, WV
- Average sunshine days in December: 16.1 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is May (10 days).
Average UV index in December
Greenville, WV
- Average UV index in December: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Greenville, WV
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in December
Greenville, WV
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (5mi).
The months with the lowest visibility are May and September (4mi).
Greenville, West Virginia, USA
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