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 onset of December entails a subtle temperature shift, as the average high-temperature eases from a fresh 50.2°F (10.1°C) in November to a cold 41.9°F (5.5°C). Throughout December, Swandale encounters an average temperature drop to a freezing cold 30°F (-1.1°C).Humidity
In Swandale, the average relative humidity in December is 82%.Rainfall
In Swandale, West Virginia, during December, the rain falls for 14.5 days and regularly aggregates up to 3.58" (91mm) of precipitation. In Swandale, during the entire year, the rain falls for 190.3 days and collects up to 36.93" (938mm) of precipitation.Snowfall
Months with snowfall in Swandale are January through May, October through December. In Swandale, in December, during 12.2 snowfall days, 7.72" (196mm) of snow is typically accumulated. In Swandale, during the entire year, snow falls for 60.4 days and aggregates up to 38.62" (981mm) of snow.Daylight
The month with the shortest days in Swandale is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:22 am and sunset at 5:03 pm. On the last day of December, in Swandale, West Virginia, sunrise is at 7:41 am and sunset at 5:13 pm EST.
Sunshine
In Swandale, the average sunshine in December is 4.3h.UV index
The months with the lowest UV index in Swandale are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 2 during December leads to these advisories:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
How cold is December in Swandale?
What is the average humidity in December in Swandale?
How much does it rain in Swandale in December?
How many days does it snow in December in Swandale?
What is the month with the shortest days in Swandale?
How many hours of daylight does Swandale have in December?
When is the sunrise / sunset in December in Swandale?
How long on average sun shines in December in Swandale?
What is the month with the lowest UV index in Swandale?
What is the UV index reading in December in Swandale?
Average temperature in December
Swandale, WV
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (36.5°F).
- Average low temperature in December: 30°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 (23.2°F).
Average pressure in December
Swandale, 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 (29.98"Hg).
Average wind speed in December
Swandale, WV
- Average wind speed in December: 6.7mph
The windiest months (with the highest average wind speed) are January and February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Swandale, WV
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are June, July, August and November (78%).
Average rainfall in December
Swandale, WV
- Average rainfall in December: 3.58"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in December
Swandale, WV
- Average rainfall days in December: 14.5 days
The month with the highest number of rainy days is May (23.3 days).
The month with the least rainy days is November (12.2 days).
Average snowfall in December
Swandale, WV
- Average snowfall in December: 7.72"
The month with the highest snowfall is January (8.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Swandale, WV
- Average snowfall days in December: 12.2 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Swandale, WV
- Average daylight in December: 9h and 3min
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: 4h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Swandale, WV
- Average sunshine days in December: 8.6 days
The month with the most sunshine days is October (14.6 days).
The month with the least sunshine days is May (6.1 days).
Average UV index in December
Swandale, WV
- Average UV index in December: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Swandale, WV
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Swandale, 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).
Swandale, West Virginia, USA
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