December weather forecastBertha Hill, WV
December
Weather in December
December, the first month of the winter in Bertha Hill, is still a cold month, with temperature in the range of an average high of 40.6°F (4.8°C) and an average low of 29.3°F (-1.5°C).Temperature
A decrease in the average high-temperature is observed during December, shifting from a cool 50°F (10°C) in November to a wintry 40.6°F (4.8°C). During December, Bertha Hill records an average temperature of 29.3°F (-1.5°C) at night.Humidity
The average relative humidity in December is 83%.Rainfall
In December, the rain falls for 13 days. Throughout December, 3.19" (81mm) of precipitation is accumulated. In Bertha Hill, West Virginia, during the entire year, the rain falls for 187.8 days and collects up to 36.46" (926mm) of precipitation.Snowfall
Months with snowfall in Bertha Hill are January through May, October through December. In December, it is snowing for 13.1 days. Throughout December, 6.14" (156mm) of snow is accumulated. Throughout the year, there are 63.1 snowfall days, and 32.32" (821mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Bertha Hill.On the first day of December, sunrise is at 7:22 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:05 pm EST.
Sunshine
In Bertha Hill, the average sunshine in December is 3.8h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 1 suggests these recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bertha Hill, WV
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (34.5°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Bertha Hill, WV
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Bertha Hill, WV
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is January (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Bertha Hill, WV
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in December
Bertha Hill, WV
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in December
Bertha Hill, WV
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is January (11.1 days).
Average snowfall in December
Bertha Hill, WV
- Average snowfall in December: 6.14"
The month with the highest snowfall is February (7.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Bertha Hill, WV
- Average snowfall days in December: 13.1 days
The month with the highest number of snowfall days is January (17 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bertha Hill, WV
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 3h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Bertha Hill, WV
- Average sunshine days in December: 10 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.7 days).
Average UV index in December
Bertha Hill, WV
- Average UV index in December: 1
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Bertha Hill, WV
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Bertha Hill, 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).
