December weather forecastWillis, VA
December
Weather in December
The first month of the winter, December, is still a chilly month in Willis, Virginia, with an average temperature varying between 44.6°F (7°C) and 30.4°F (-0.9°C).Temperature
The arrival of December signals a subtle shift in temperature, down from a cool 52.7°F (11.5°C) in November to a chilly 44.6°F (7°C). Willis's average low-temperature is measured at a freezing cold 30.4°F (-0.9°C) during December.Humidity
December is the most humid month, with an average relative humidity of 80%.Rainfall
In December, in Willis, the rain falls for 11 days. Throughout December, 1.61" (41mm) of precipitation is accumulated. In Willis, during the entire year, the rain falls for 161.9 days and collects up to 21.97" (558mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 4.5 days. Throughout December, 2.36" (60mm) of snow is accumulated. Throughout the year, there are 29.5 snowfall days, and 11.3" (287mm) of snow is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:16 am and sunset at 5:05 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 5:15 pm EST.
Sunshine
The average sunshine in December is 5h.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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 2 during December leads to these advisories:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed 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
Average temperature in December
Willis, VA
- Average high temperature in December: 44.6°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Willis, VA
- 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
Willis, VA
- Average wind speed in December: 7.1mph
The windiest months (with the highest average wind speed) are January and February (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Willis, VA
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are April, June, July and November (76%).
Average rainfall in December
Willis, VA
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in December
Willis, VA
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in December
Willis, VA
- Average snowfall in December: 2.36"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Willis, VA
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Willis, VA
- Average daylight in December: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Willis, VA
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (9.7 days).
Average UV index in December
Willis, VA
- 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
Willis, VA
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 36).
Average visibility in December
Willis, VA
- 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).
