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
As November makes way for December, Swann's average high-temperature eases from a cool 53.1°F (11.7°C) to a frosty 44.2°F (6.8°C). Swann throughout December, records an average low-temperature of 32.5°F (0.3°C).Humidity
January, February and December, with an average relative humidity of 81%, are the most humid months in Swann, West Virginia.Rainfall
In Swann, in December, during 12.7 rainfall days, 3.23" (82mm) of precipitation is typically accumulated. In Swann, during the entire year, the rain falls for 174.3 days and collects up to 34.45" (875mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Swann. In Swann, during December, snow falls for 8 days and regularly aggregates up to 3.46" (88mm) of snow. In Swann, during the entire year, snow falls for 40.5 days and aggregates up to 16.89" (429mm) of snow.Daylight
The month with the shortest days in Swann, West Virginia, is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:27 am and sunset at 5:08 pm. On the last day of December, in Swann, sunrise is at 7:46 am and sunset at 5:17 pm EST.
Sunshine
The average sunshine in December is 4.1h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Swann, West Virginia. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 2 in December translates into these instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
How cold does it get in Swann in December?
What are the most humid months in Swann?
What is the average humidity in December in Swann?
How many days does it rain in December in Swann?
How much does it snow in Swann in December?
What is the month with the shortest days in Swann?
What is the average length of the day in December in Swann?
What time are sunrise and sunset in December in Swann?
How long on average sun shines in December in Swann?
What are the months with the lowest UV index in Swann?
What is the UV index reading in December in Swann?
Average temperature in December
Swann, WV
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 32.5°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in December
Swann, 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 (29.97"Hg).
Average wind speed in December
Swann, WV
- Average wind speed in December: 6.2mph
The windiest months (with the highest average wind speed) are January, February and April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Swann, WV
- Average humidity in December: 81%
The months with the highest relative humidity are January, February and December (81%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Swann, WV
- Average rainfall in December: 3.23"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Swann, WV
- Average rainfall days in December: 12.7 days
The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is November (10.7 days).
Average snowfall in December
Swann, WV
- Average snowfall in December: 3.46"
The month with the highest snowfall is January (4.25").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Swann, WV
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Swann, 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 1min
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 36min).
Average sunshine days in December
Swann, WV
- Average sunshine days in December: 12.4 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (9 days).
Average UV index in December
Swann, WV
- 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, February and December (UV index 2).
Average cloud cover in December
Swann, WV
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Swann, WV
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Swann, West Virginia, USA
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