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
With the arrival of December, Flat Top notices a mild change in the average high-temperature, sliding from November's fresh 50.4°F (10.2°C) to a wintry 42.3°F (5.7°C). Throughout December nights, Flat Top experiences a consistent temperature average of 30°F (-1.1°C).Humidity
In December, the average relative humidity is 82%.Rainfall
In December, the rain falls for 12.1 days. Throughout December, 3.31" (84mm) of precipitation is accumulated. In Flat Top, during the entire year, the rain falls for 178.1 days and collects up to 33.62" (854mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 12.4 days. Throughout December, 7.44" (189mm) of snow is accumulated. In Flat Top, during the entire year, snow falls for 62.6 days and aggregates up to 40.2" (1021mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 7:21 am and sunset at 5:06 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:16 pm EST.
Sunshine
In Flat Top, the average sunshine in December is 4.5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 2 during December leads to these advisories:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Flat Top have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Flat Top have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Flat Top, WV
- Average high temperature in December: 42.3°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 (37°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
Flat Top, 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 (29.99"Hg).
Average wind speed in December
Flat Top, WV
- Average wind speed in December: 6.9mph
The windiest months (with the highest average wind speed) are January and February (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Flat Top, WV
- Average humidity in December: 82%
The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are April, June, July, August and November (78%).
Average rainfall in December
Flat Top, WV
- Average rainfall in December: 3.31"
The wettest months (with the highest rainfall) are February and May (3.5").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in December
Flat Top, WV
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is February (9.9 days).
Average snowfall in December
Flat Top, WV
- Average snowfall in December: 7.44"
The month with the highest snowfall is February (9.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Flat Top, WV
- Average snowfall days in December: 12.4 days
The month with the highest number of snowfall days is January (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Flat Top, WV
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 3min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Flat Top, WV
- Average sunshine days in December: 11 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is May (8.8 days).
Average UV index in December
Flat Top, 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
Flat Top, 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 July (Cloud cover 38).
Average visibility in December
Flat Top, WV
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February and September (4mi).
Flat Top, West Virginia, USA
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