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 start of December involves a subtle temperature drop, shifting from a fresh 51.3°F (10.7°C) in November to a frosty 42.8°F (6°C). In the month of December, Swiss experiences an average low-temperature of 30.4°F (-0.9°C).Humidity
The average relative humidity in December is 82%.Rainfall
In Swiss, in December, during 13 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, there are 176.2 rainfall days, and 30.55" (776mm) of precipitation is accumulated.Snowfall
Months with snowfall in Swiss are January through May, October through December. In Swiss, in December, snow falls for 9.7 days, with typically accumulated 3.74" (95mm) of snow. Throughout the year, there are 48.4 snowfall days, and 21.34" (542mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:22 am and sunset at 5:04 pm. On the last day of December, sunrise is at 7:41 am and sunset at 5:14 pm EST.
Sunshine
The average sunshine in December is 4.3h.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 unsafe exposure to UV radiation for average individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Around midday, solar radiation is most harmful; hence, exposure should be limited. Opt for tightly woven and loose clothing to enhance protection from the Sun. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
Is it cold in Swiss during December?
What is the average humidity in December in Swiss?
How many days does it rain in December in Swiss?
How much does it snow in Swiss in December?
What is the month with the shortest days in Swiss?
What is the average length of the day in December in Swiss?
What time are sunrise and sunset in December in Swiss?
How many hours of sunshine does Swiss have in December?
When is the lowest UV index in Swiss?
How high is the UV index in December in Swiss?
Average temperature in December
Swiss, WV
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure in December
Swiss, 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
Swiss, WV
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is February (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Swiss, WV
- Average humidity in December: 82%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is June (77%).
Average rainfall in December
Swiss, WV
- Average rainfall in December: 2.72"
The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in December
Swiss, WV
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is November (11 days).
Average snowfall in December
Swiss, WV
- Average snowfall in December: 3.74"
The month with the highest snowfall is January (5.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Swiss, WV
- Average snowfall days in December: 9.7 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Swiss, WV
- Average daylight in December: 9h and 4min
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: 4h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Swiss, WV
- Average sunshine days in December: 11 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is January (8.4 days).
Average UV index in December
Swiss, WV
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Swiss, 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 35).
Average visibility in December
Swiss, 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).
Swiss, West Virginia, USA
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