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
December indicates a shift in the average high-temperature, from November's cool 52.9°F (11.6°C) to a chilly 43.3°F (6.3°C). Mercers Bottom witnesses an average low-temperature of 31.8°F (-0.1°C) throughout the month of December.Humidity
In Mercers Bottom, West Virginia, the average relative humidity in December is 81%.Rainfall
In December, the rain falls for 13.6 days. Throughout December, 3.43" (87mm) of precipitation is accumulated. Throughout the year, there are 176.2 rainfall days, and 35" (889mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Mercers Bottom, West Virginia. In Mercers Bottom, during December, snow falls for 8.6 days and regularly aggregates up to 3.27" (83mm) of snow. In Mercers Bottom, during the entire year, snow falls for 41.5 days and aggregates up to 17.05" (433mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Mercers Bottom, West Virginia.On the first day of December, sunrise is at 7:28 am and sunset at 5:07 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:17 pm EST.
Sunshine
In Mercers Bottom, the average sunshine in December is 4.2h.UV index
January, February 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 vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Mercers Bottom in December?
What is the average humidity in December in Mercers Bottom?
How many days does it rain in December in Mercers Bottom?
How much does it snow in Mercers Bottom in December?
What is the month with the shortest days in Mercers Bottom?
What is the average length of the day in December in Mercers Bottom?
When is the sunrise / sunset in December in Mercers Bottom?
How many hours of sunshine does Mercers Bottom have in December?
When is the lowest UV index in Mercers Bottom?
What is the UV index intensity in December in Mercers Bottom?
Average temperature in December
Mercers Bottom, WV
- Average high temperature in December: 43.3°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 (38.7°F).
- Average low temperature in December: 31.8°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Mercers Bottom, 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 (29.97"Hg).
Average wind speed in December
Mercers Bottom, WV
- Average wind speed in December: 6.2mph
The windiest months (with the highest average wind speed) are January and February (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Mercers Bottom, 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 (74%).
Average rainfall in December
Mercers Bottom, WV
- Average rainfall in December: 3.43"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in December
Mercers Bottom, WV
- Average rainfall days in December: 13.6 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in December
Mercers Bottom, WV
- Average snowfall in December: 3.27"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Mercers Bottom, WV
- Average snowfall days in December: 8.6 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mercers Bottom, 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 24min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Mercers Bottom, WV
- Average sunshine days in December: 11.7 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (8.6 days).
Average UV index in December
Mercers Bottom, 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
Mercers Bottom, 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
Mercers Bottom, 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).
Mercers Bottom, West Virginia, USA
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