December weather forecastSimpson, WV
December
Weather in December
The first month of the winter, December, is also an icy month in Simpson, West Virginia, with temperature in the range of an average high of 41.5°F (5.3°C) and an average low of 29.5°F (-1.4°C).Temperature
December's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from November's cool 50.2°F (10.1°C) to an icy 41.5°F (5.3°C). In Simpson, the expected average low-temperature for December is a freezing cold 29.5°F (-1.4°C).Humidity
In December, the average relative humidity in Simpson is 82%.Rainfall
In December, the rain falls for 13.7 days. Throughout December, 3.19" (81mm) of precipitation is accumulated. Throughout the year, there are 184.5 rainfall days, and 35.35" (898mm) of precipitation is accumulated.Snowfall
Months with snowfall in Simpson are January through May, October through December. In Simpson, in December, snow falls for 11.5 days, with typically accumulated 4.96" (126mm) of snow. In Simpson, during the entire year, snow falls for 58.4 days and aggregates up to 31.26" (794mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:21 am and sunset at 4:57 pm. On the last day of December, in Simpson, West Virginia, sunrise is at 7:39 am and sunset at 5:07 pm EST.
Sunshine
In Simpson, the average sunshine in December is 3.9h.UV index
The months with the lowest UV index in Simpson, West Virginia, are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Simpson, WV
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in December: 29.5°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in December
Simpson, 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
Simpson, WV
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Simpson, 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 July and August (77%).
Average rainfall in December
Simpson, WV
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Simpson, WV
- Average rainfall days in December: 13.7 days
The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is February (11.9 days).
Average snowfall in December
Simpson, WV
- Average snowfall in December: 4.96"
The month with the highest snowfall is January (7.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Simpson, WV
- Average snowfall days in December: 11.5 days
The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Simpson, WV
- Average daylight in December: 9h and 30min
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 30min).
- Average sunshine in December: 3h and 54min
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 12min).
Average sunshine days in December
Simpson, WV
- Average sunshine days in December: 9.1 days
The month with the most sunshine days is October (13.7 days).
The month with the least sunshine days is January (6.5 days).
Average UV index in December
Simpson, WV
- Average UV index in December: 2
The month with the highest UV index is 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
Simpson, WV
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Simpson, 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).
