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 arrival of December corresponds with a reduction in the average high-temperature, down from November's fresh 53.1°F (11.7°C) to a chilly 43.9°F (6.6°C). December brings with it a nighttime average temperature of 32.5°F (0.3°C).Humidity
In Riverlake, the average relative humidity in December is 81%.Rainfall
In Riverlake, during December, the rain falls for 11 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, there are 152.9 rainfall days, and 16.5" (419mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Riverlake, during December, snow falls for 7.5 days and regularly aggregates up to 1.89" (48mm) of snow. In Riverlake, during the entire year, snow falls for 37.1 days and aggregates up to 8.27" (210mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:26 am and sunset at 5:07 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:17 pm EST.
Sunshine
In Riverlake, West Virginia, the average sunshine in December is 4.2h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December in Riverlake?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Riverlake, WV
- Average high temperature in December: 43.9°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 32.5°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in December
Riverlake, WV
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Riverlake, WV
- Average wind speed in December: 6.1mph
The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Riverlake, WV
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (75%).
Average rainfall in December
Riverlake, WV
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is September (0.83").
Average rainfall days in December
Riverlake, WV
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in December
Riverlake, WV
- Average snowfall in December: 1.89"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Riverlake, WV
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Riverlake, 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: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Riverlake, WV
- Average sunshine days in December: 14.3 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in December
Riverlake, 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 and December (UV index 2).
Average cloud cover in December
Riverlake, WV
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Riverlake, WV
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Riverlake, West Virginia, USA
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