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 average high-temperature drops in December, from November's fresh 50.9°F (10.5°C) to a cold 41.9°F (5.5°C). An average nighttime temperature of 29.8°F (-1.2°C) is witnessed throughout December.Humidity
In Prospect Valley, the average relative humidity in December is 82%.Rainfall
In Prospect Valley, in December, it is raining for 14 days, with typically 3.35" (85mm) of accumulated precipitation. Throughout the year, there are 189.3 rainfall days, and 36.97" (939mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 11.9 days. Throughout December, 5.35" (136mm) of snow is accumulated. In Prospect Valley, during the entire year, snow falls for 57.8 days and aggregates up to 28.9" (734mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December in Prospect Valley, sunrise is at 7:23 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:08 pm EST.
Sunshine
The average sunshine in December is 3.8h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 in December translates into these instructions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Prospect Valley have in December?
When are sunrise and sunset in December in Prospect Valley?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Prospect Valley, WV
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in December: 29.8°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in December
Prospect Valley, 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
Prospect Valley, WV
- Average wind speed in December: 6.3mph
The windiest months (with the highest average wind speed) are January and February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Prospect Valley, WV
- Average humidity in December: 82%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are July, August and November (77%).
Average rainfall in December
Prospect Valley, WV
- Average rainfall in December: 3.35"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in December
Prospect Valley, WV
- Average rainfall days in December: 14 days
The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is November (11.8 days).
Average snowfall in December
Prospect Valley, WV
- Average snowfall in December: 5.35"
The month with the highest snowfall is January (7.52").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Prospect Valley, WV
- Average snowfall days in December: 11.9 days
The month with the highest number of snowfall days is January (16.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Prospect Valley, WV
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 3h and 5min
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 18min).
Average sunshine days in December
Prospect Valley, WV
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is October (13.8 days).
The month with the least sunshine days is January (7.4 days).
Average UV index in December
Prospect Valley, WV
- Average UV index in December: 2
The months with the highest UV index are May, June and 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
Prospect Valley, WV
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Prospect Valley, 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).
Prospect Valley, West Virginia, USA
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