December weather forecastBig Isaac, WV
December
Weather in December
December, the first month of the winter in Big Isaac, is also a wintry month, with an average temperature varying between 42.1°F (5.6°C) and 30.6°F (-0.8°C).Temperature
The onset of December results in a small decrease in the average high-temperature, moderately receding from a cool 50.7°F (10.4°C) in November to a cold 42.1°F (5.6°C). December brings with it a nighttime average temperature of 30.6°F (-0.8°C).Humidity
The average relative humidity in December is 82%.Rainfall
In December, the rain falls for 12.7 days. Throughout December, 3.39" (86mm) of precipitation is accumulated. Throughout the year, there are 186.8 rainfall days, and 38.7" (983mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Big Isaac, West Virginia, in December, snow falls for 12.3 days, with typically accumulated 5.43" (138mm) of snow. In Big Isaac, during the entire year, snow falls for 58.9 days and aggregates up to 29.41" (747mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Big Isaac.On the first day of December, sunrise is at 7:23 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:09 pm EST.
Sunshine
In December, the average sunshine is 3.7h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Big Isaac. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Big Isaac, WV
- Average high temperature in December: 42.1°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in December: 30.6°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average pressure in December
Big Isaac, WV
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Big Isaac, WV
- Average wind speed in December: 6.2mph
The windiest months (with the highest average wind speed) are January and February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in December
Big Isaac, WV
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are June, August and November (77%).
Average rainfall in December
Big Isaac, WV
- Average rainfall in December: 3.39"
The wettest month (with the highest rainfall) is May (4.57").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days in December
Big Isaac, WV
- Average rainfall days in December: 12.7 days
The month with the highest number of rainy days is May (20.6 days).
The month with the least rainy days is November (11.4 days).
Average snowfall in December
Big Isaac, WV
- Average snowfall in December: 5.43"
The month with the highest snowfall is January (7.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Big Isaac, WV
- Average snowfall days in December: 12.3 days
The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Big Isaac, 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 42min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Big Isaac, WV
- Average sunshine days in December: 9.7 days
The month with the most sunshine days is November (14.9 days).
The month with the least sunshine days is January (7.4 days).
Average UV index in December
Big Isaac, 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, November and December (UV index 2).
Average cloud cover in December
Big Isaac, WV
- Average cloud cover in December: 63
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
Big Isaac, 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).
