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 arrival of December corresponds with a minor reduction in the average high-temperature, down from November's cool 51.8°F (11°C) to a chilly 43.7°F (6.5°C). December nights in Kellysville observe an average temperature dip to a subzero cold 30°F (-1.1°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 81%.Rainfall
In December, the rain falls for 10.7 days. Throughout December, 1.97" (50mm) of precipitation is accumulated. In Kellysville, during the entire year, the rain falls for 158.3 days and collects up to 23.5" (597mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Kellysville, in December, during 3.9 snowfall days, 2.36" (60mm) of snow is typically accumulated. In Kellysville, during the entire year, snow falls for 26.7 days and aggregates up to 13.46" (342mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December in Kellysville, West Virginia, sunrise is at 7:19 am and sunset at 5:06 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:16 pm EST.
Sunshine
In Kellysville, the average sunshine in December is 4.9h.UV index
The months with the lowest UV index in Kellysville are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 2 during December leads to these advisories:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Kellysville in December?
What is the most humid month in Kellysville?
What is the average humidity in December in Kellysville?
How many days does it rain in December in Kellysville?
How much does it snow in Kellysville in December?
What is the month with the shortest days in Kellysville?
How many hours of daylight does Kellysville have in December?
When are sunrise and sunset in December in Kellysville?
How many hours of sunshine does Kellysville have in December?
What is the month with the lowest UV index in Kellysville?
What is the UV index reading in December in Kellysville?
Average temperature in December
Kellysville, WV
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Kellysville, 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 (29.99"Hg).
Average wind speed in December
Kellysville, 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
Kellysville, WV
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are June, July and November (77%).
Average rainfall in December
Kellysville, WV
- Average rainfall in December: 1.97"
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
Kellysville, WV
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is October (8.8 days).
Average snowfall in December
Kellysville, WV
- Average snowfall in December: 2.36"
The month with the highest snowfall is January (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Kellysville, WV
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Kellysville, 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 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Kellysville, WV
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in December
Kellysville, WV
- Average UV index in December: 2
The months with the highest UV index are June 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
Kellysville, WV
- Average cloud cover in December: 53
The months with the most cloud cover are January and February (Cloud cover 56).
The months with the least cloud cover are June and July (Cloud cover 38).
Average visibility in December
Kellysville, WV
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
Kellysville, West Virginia, USA
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