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 start of December comes with a small reduction in the average high-temperature, subtly receding from a chilly 48.7°F (9.3°C) in November to a cold 40.6°F (4.8°C). An average nighttime temperature of 28.2°F (-2.1°C) is witnessed in Marybill throughout December.Humidity
In Marybill, the average relative humidity in December is 83%.Rainfall
In Marybill, during December, the rain falls for 12.5 days and regularly aggregates up to 3.7" (94mm) of precipitation. Throughout the year, there are 197.5 rainfall days, and 41.61" (1057mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Marybill, in December, during 11.4 snowfall days, 7.64" (194mm) of snow is typically accumulated. Throughout the year, there are 59.4 snowfall days, and 37.4" (950mm) of snow is accumulated.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 5:02 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:12 pm EST.
Sunshine
The average sunshine in December in Marybill 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 Marybill. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Marybill in December?
What is the average humidity in December in Marybill?
How much does it rain in Marybill in December?
How many days does it snow in December in Marybill?
What is the month with the shortest days in Marybill?
How many hours of daylight does Marybill have in December?
When are sunrise and sunset in December in Marybill?
How long on average sun shines in December in Marybill?
What are the months with the lowest UV index in Marybill?
How high is the UV index in December in Marybill?
Average temperature in December
Marybill, WV
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in December: 28.2°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Marybill, 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
Marybill, WV
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Marybill, WV
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are June, July and November (79%).
Average rainfall in December
Marybill, WV
- Average rainfall in December: 3.7"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in December
Marybill, WV
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is May (23.4 days).
The month with the least rainy days is January (11.4 days).
Average snowfall in December
Marybill, WV
- Average snowfall in December: 7.64"
The month with the highest snowfall is February (8.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Marybill, WV
- Average snowfall days in December: 11.4 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Marybill, WV
- Average daylight in December: 9h and 4min
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 36min).
- Average sunshine in December: 4h and 2min
The months with the most sunshine are June and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Marybill, WV
- Average sunshine days in December: 10 days
The month with the most sunshine days is October (14.6 days).
The month with the least sunshine days is May (5.9 days).
Average UV index in December
Marybill, WV
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Marybill, WV
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Marybill, 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).
Marybill, West Virginia, USA
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