December weather forecastDayton, VA
December
Weather in December
The first month of the winter, December, is still a chilly month in Dayton, Virginia, with an average temperature fluctuating between 43.7°F (6.5°C) and 28.9°F (-1.7°C).Temperature
The transition to December results in a modest reduction in average high-temperature, moving from a cool 52.2°F (11.2°C) in November to a chilly 43.7°F (6.5°C). The average temperature in Dayton drops to a subzero cold 28.9°F (-1.7°C) during the night in the month of December.Humidity
The average relative humidity in December is 77%.Rainfall
In Dayton, in December, during 10.4 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. In Dayton, during the entire year, the rain falls for 167.3 days and collects up to 30.35" (771mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Dayton, during December, snow falls for 3.5 days and regularly aggregates up to 2.52" (64mm) of snow. Throughout the year, there are 23.3 snowfall days, and 16.89" (429mm) 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 December, sunrise is at 7:14 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:05 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 5.3h of sunshine.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 estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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
Dayton, VA
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 28.9°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in December
Dayton, VA
- Average pressure in December: 30.12"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
Dayton, VA
- Average wind speed in December: 5.7mph
The windiest months (with the highest average wind speed) are February and April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Dayton, VA
- Average humidity in December: 77%
The months with the highest relative humidity are May, September and October (78%).
The months with the lowest relative humidity are January and July (74%).
Average rainfall in December
Dayton, VA
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is November (1.77").
Average rainfall days in December
Dayton, VA
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is November (9 days).
Average snowfall in December
Dayton, VA
- Average snowfall in December: 2.52"
The month with the highest snowfall is March (4.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Dayton, VA
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Dayton, VA
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in December
Dayton, VA
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in December
Dayton, VA
- 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
Dayton, VA
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are June and July (Cloud cover 32).
Average visibility in December
Dayton, VA
- Average visibility in December: 5mi
The months with the highest visibility are February, April, June, July and November (6mi).
The months with the lowest visibility are January, March, May, August, September, October and December (5mi).
