December weather forecastHorntown, VA
December
Weather in December
December, the first month of the winter in Horntown, is also a frosty month, with an average temperature fluctuating between 49.1°F (9.5°C) and 39.4°F (4.1°C).Temperature
December's onset brings a negligible change in high-temperatures, falling from a mild 56.1°F (13.4°C) in November to a chilly 49.1°F (9.5°C). The nighttime temperature in Horntown, Virginia, during December, averages of 39.4°F (4.1°C).Humidity
The average relative humidity in December is 76%.Rainfall
In Horntown, Virginia, in December, it is raining for 10.5 days, with typically 1.26" (32mm) of accumulated precipitation. In Horntown, during the entire year, the rain falls for 128 days and collects up to 16.1" (409mm) of precipitation.Snowfall
Months with snowfall in Horntown are January through March, November and December. In December, in Horntown, it is snowing for 0.9 days. Throughout December, 0.08" (2mm) of snow is accumulated. Throughout the year, in Horntown, there are 5.5 snowfall days, and 0.79" (20mm) of snow is accumulated.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:59 am and sunset at 4:42 pm. On the last day of December, in Horntown, sunrise is at 7:17 am and sunset at 4:52 pm EST.
Sunshine
In Horntown, Virginia, the average sunshine in December is 5.3h.UV index
The months with the lowest UV index in Horntown are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 2 during December leads to these instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Horntown, VA
- Average high temperature in December: 49.1°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (43.5°F).
- Average low temperature in December: 39.4°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in December
Horntown, VA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Horntown, VA
- Average wind speed in December: 10.9mph
The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is August (7.9mph).
Average humidity in December
Horntown, VA
- Average humidity in December: 76%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is January (73%).
Average rainfall in December
Horntown, VA
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is July (1.97").
The driest month (with the least rainfall) is May (1.06").
Average rainfall days in December
Horntown, VA
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in December
Horntown, VA
- Average snowfall in December: 0.08"
The month with the highest snowfall is March (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Horntown, VA
- Average snowfall days in December: 0.9 days
The months with the highest number of snowfall days are January and February (1.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Horntown, VA
- Average daylight in December: 9h and 36min
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 36min).
- Average sunshine in December: 5h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in December
Horntown, VA
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is July (14.7 days).
Average UV index in December
Horntown, VA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Horntown, VA
- Average cloud cover in December: 43
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Horntown, VA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
