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 transition to December results in a modest reduction in average high-temperature, moving from a fresh 50.5°F (10.3°C) in November to an icy 41.7°F (5.4°C). The temperature lowers to an average of 28°F (-2.2°C) during December nights.Humidity
The months with the highest humidity in Riverton are February, September, October and December, with an average relative humidity of 79%.Rainfall
In Riverton, in December, it is raining for 14.2 days, with typically 2.28" (58mm) of accumulated precipitation. In Riverton, during the entire year, the rain falls for 176.4 days and collects up to 25.24" (641mm) of precipitation.Snowfall
Months with snowfall in Riverton are January through May, October through December. In December, in Riverton, it is snowing for 6.8 days. Throughout December, 2.64" (67mm) of snow is accumulated. In Riverton, during the entire year, snow falls for 37.9 days and aggregates up to 15.91" (404mm) 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 December, sunrise is at 7:17 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:06 pm EST.
Sunshine
In Riverton, West Virginia, the average sunshine in December is 5h.UV index
The months with the lowest UV index in Riverton are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 2 suggests this advice:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
How cold does it get in Riverton in December?
What is the most humid month in Riverton?
What is the average humidity in December in Riverton?
How much does it rain in Riverton in December?
How many days does it snow in December in Riverton?
What is the month with the shortest days in Riverton?
What is the average length of the day in December in Riverton?
What time are sunrise and sunset in December in Riverton?
How many hours of sunshine does Riverton have in December?
What are the months with the lowest UV index in Riverton?
What is the UV index reading in December in Riverton?
Average temperature in December
Riverton, WV
- Average high temperature in December: 41.7°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 (36.3°F).
- Average low temperature in December: 28°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Riverton, 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
Riverton, WV
- Average wind speed in December: 6.3mph
The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Riverton, WV
- Average humidity in December: 79%
The months with the highest relative humidity are February, September, October and December (79%).
The months with the lowest relative humidity are April, June and July (75%).
Average rainfall in December
Riverton, WV
- Average rainfall in December: 2.28"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is November (1.73").
Average rainfall days in December
Riverton, WV
- Average rainfall days in December: 14.2 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (11.6 days).
Average snowfall in December
Riverton, WV
- Average snowfall in December: 2.64"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Riverton, WV
- Average snowfall days in December: 6.8 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Riverton, WV
- Average daylight in December: 9h and 3min
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 30min).
- Average sunshine in December: 5h and 0min
The months with the most sunshine are June, July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Riverton, WV
- Average sunshine days in December: 12.1 days
The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is February (9.7 days).
Average UV index in December
Riverton, WV
- Average UV index in December: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Riverton, WV
- Average cloud cover in December: 47
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Riverton, WV
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The month with the lowest visibility is September (4mi).
Riverton, West Virginia, USA
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