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 shift from November to December includes a small decrease in the average high-temperature, from a cool 50.2°F (10.1°C) to a wintry 41.9°F (5.5°C). In December, Clay's temperature tends to fall to an average low of 30°F (-1.1°C) during the night.Humidity
The average relative humidity in December in Clay is 82%.Rainfall
In Clay, during December, the rain falls for 14.5 days and regularly aggregates up to 3.58" (91mm) of precipitation. Throughout the year, there are 190.3 rainfall days, and 36.93" (938mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 12.2 days. Throughout December, 7.72" (196mm) of snow is accumulated. Throughout the year, in Clay, there are 60.4 snowfall days, and 38.62" (981mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Clay.On the first day of December, sunrise is at 7:23 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:13 pm EST.
Sunshine
In Clay, West Virginia, the average sunshine in December is 4.3h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Clay. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 2 in December translates into these instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. 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
How cold is it in Clay in December?
What is the average humidity in December in Clay?
How many days does it rain in December in Clay?
How many days does it snow in December in Clay?
What is the month with the shortest days in Clay?
What is the average length of the day in December in Clay?
When are sunrise and sunset in December in Clay?
How many hours of sunshine does Clay have in December?
When is the lowest UV index in Clay?
What is the UV index reading in December in Clay?
Average temperature in December
Clay, WV
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (36.5°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
Clay, 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
Clay, WV
- Average wind speed in December: 6.7mph
The windiest months (with the highest average wind speed) are January and February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Clay, WV
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are June, July, August and November (78%).
Average rainfall in December
Clay, WV
- Average rainfall in December: 3.58"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in December
Clay, WV
- Average rainfall days in December: 14.5 days
The month with the highest number of rainy days is May (23.3 days).
The month with the least rainy days is November (12.2 days).
Average snowfall in December
Clay, WV
- Average snowfall in December: 7.72"
The month with the highest snowfall is January (8.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Clay, WV
- Average snowfall days in December: 12.2 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Clay, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Clay, WV
- Average sunshine days in December: 8.6 days
The month with the most sunshine days is October (14.6 days).
The month with the least sunshine days is May (6.1 days).
Average UV index in December
Clay, 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, November and December (UV index 2).
Average cloud cover in December
Clay, WV
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Clay, 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).
Clay, West Virginia, USA
Weather forecast for your location
2. Allow the app to use your location