December weather forecastAlliance, WV
December
Weather in December
December, the first month of the winter in Alliance, is still a cold month, with an average temperature fluctuating between 41.5°F (5.3°C) and 29.3°F (-1.5°C).Temperature
With December's onset, the weather shows a temperature decrease, transitioning from a fresh 50.5°F (10.3°C) in November to a wintry 41.5°F (5.3°C). During December, Alliance consistently records a temperature low averaging a freezing cold 29.3°F (-1.5°C).Humidity
In Alliance, the average relative humidity in December is 82%.Rainfall
In Alliance, in December, during 13.1 rainfall days, 3.35" (85mm) of precipitation is typically accumulated. In Alliance, West Virginia, during the entire year, the rain falls for 188.6 days and collects up to 39.17" (995mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Alliance, in December, snow falls for 10.7 days, with typically accumulated 4.29" (109mm) of snow. In Alliance, during the entire year, snow falls for 52.1 days and aggregates up to 24.21" (615mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:23 am and sunset at 4:58 pm. On the last day of December, sunrise is at 7:42 am and sunset at 5:08 pm EST.
Sunshine
In Alliance, the average sunshine in December is 3.5h.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 low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Alliance, WV
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Alliance, WV
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Alliance, WV
- Average wind speed in December: 6.3mph
The windiest months (with the highest average wind speed) are January and February (7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Alliance, WV
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (77%).
Average rainfall in December
Alliance, WV
- Average rainfall in December: 3.35"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is November (2.24").
Average rainfall days in December
Alliance, WV
- Average rainfall days in December: 13.1 days
The month with the highest number of rainy days is May (21.3 days).
The month with the least rainy days is January (10.8 days).
Average snowfall in December
Alliance, WV
- Average snowfall in December: 4.29"
The month with the highest snowfall is February (6.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Alliance, WV
- Average snowfall days in December: 10.7 days
The month with the highest number of snowfall days is January (15 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Alliance, WV
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 3h and 30min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Alliance, WV
- Average sunshine days in December: 10.8 days
The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is May (7.8 days).
Average UV index in December
Alliance, WV
- Average UV index in December: 2
The months with the highest UV index are May 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
Alliance, WV
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Alliance, WV
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).
