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 signals a decrease in the average high-temperature, transitioning from a fresh 50°F (10°C) in November to a wintry 40.6°F (4.8°C). Rock Forge cools down to an average low-temperature of 29.3°F (-1.5°C) throughout the month of December.Humidity
The average relative humidity in December in Rock Forge, West Virginia, is 83%.Rainfall
In December, in Rock Forge, the rain falls for 13 days. Throughout December, 3.19" (81mm) of precipitation is accumulated. In Rock Forge, West Virginia, during the entire year, the rain falls for 187.8 days and collects up to 36.46" (926mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 13.1 days. Throughout December, 6.14" (156mm) of snow is accumulated. In Rock Forge, during the entire year, snow falls for 63.1 days and aggregates up to 32.32" (821mm) of snow.Daylight
December has the shortest days of the year in Rock Forge, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:21 am and sunset at 4:56 pm. On the last day of December, sunrise is at 7:40 am and sunset at 5:05 pm EST.
Sunshine
The average sunshine in December is 3.8h.UV index
December is the month with the lowest UV index in Rock Forge, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. Boost your sun resistance with garments that are densely woven yet spacious. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
How cold is December in Rock Forge?
What is the average humidity in December in Rock Forge?
How much does it rain in Rock Forge in December?
How many days does it snow in December in Rock Forge?
What is the month with the shortest days in Rock Forge?
What is the average length of the day in December in Rock Forge?
When is the sunrise / sunset in December in Rock Forge?
How many hours of sunshine does Rock Forge have in December?
What is the month with the lowest UV index in Rock Forge?
What is the UV index reading in December in Rock Forge?
Average temperature in December
Rock Forge, WV
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (34.5°F).
- Average low temperature in December: 29.3°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 (21.6°F).
Average pressure in December
Rock Forge, 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 (29.95"Hg).
Average wind speed in December
Rock Forge, WV
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is January (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Rock Forge, WV
- Average humidity in December: 83%
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
Rock Forge, WV
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in December
Rock Forge, WV
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is January (11.1 days).
Average snowfall in December
Rock Forge, WV
- Average snowfall in December: 6.14"
The month with the highest snowfall is February (7.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rock Forge, WV
- Average snowfall days in December: 13.1 days
The month with the highest number of snowfall days is January (17 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rock Forge, 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 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Rock Forge, WV
- Average sunshine days in December: 10 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.7 days).
Average UV index in December
Rock Forge, WV
- Average UV index in December: 1
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Rock Forge, 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
Rock Forge, 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).
Rock Forge, West Virginia, USA
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