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 commencement of December indicates a shift in the average high-temperature, receding from November's fresh 52.5°F (11.4°C) to a chilly 43.2°F (6.2°C). Throughout the month of December, Flatrock expects an average low of 31.3°F (-0.4°C).Humidity
The average relative humidity in December is 81%.Rainfall
In December, the rain falls for 13 days. Throughout December, 2.44" (62mm) of precipitation is accumulated. In Flatrock, during the entire year, the rain falls for 169.2 days and collects up to 27.56" (700mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Flatrock, in December, snow falls for 7.2 days, with typically accumulated 1.38" (35mm) of snow. In Flatrock, during the entire year, snow falls for 35.5 days and aggregates up to 7.2" (183mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:28 am and sunset at 5:06 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:16 pm EST.
Sunshine
In December, the average sunshine is 4.1h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Flatrock. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 2 in December translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Flatrock have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Flatrock have in December?
When is the lowest UV index?
What is the UV index intensity in December in Flatrock?
Average temperature in December
Flatrock, WV
- Average high temperature in December: 43.2°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 31.3°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Flatrock, WV
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Flatrock, WV
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in December
Flatrock, WV
- Average humidity in December: 81%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Flatrock, WV
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in December
Flatrock, WV
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in December
Flatrock, WV
- Average snowfall in December: 1.38"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Flatrock, WV
- Average snowfall days in December: 7.2 days
The month with the highest number of snowfall days is January (11.3 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
Flatrock, 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 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Flatrock, WV
- Average sunshine days in December: 12.2 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is February (9.2 days).
Average UV index in December
Flatrock, 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
Flatrock, WV
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Flatrock, WV
- Average visibility in December: 5mi
The months with the highest visibility are April, June and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September, October and December (5mi).
Flatrock, West Virginia, USA
Weather forecast for your location
2. Allow the app to use your location