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
In Glen Morgan, entering December brings a subtle temperature decrement, reducing from November's fresh 50.4°F (10.2°C) to a cold 42.4°F (5.8°C). Glen Morgan's nighttime temperature in December drops to an average of 30°F (-1.1°C).Humidity
In Glen Morgan, the average relative humidity in December is 82%.Rainfall
In Glen Morgan, during December, the rain falls for 13.3 days and regularly aggregates up to 3.62" (92mm) of precipitation. In Glen Morgan, during the entire year, the rain falls for 189.8 days and collects up to 36.5" (927mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Glen Morgan, West Virginia, during December, snow falls for 12.6 days and regularly aggregates up to 7.48" (190mm) of snow. Throughout the year, there are 64.5 snowfall days, and 40.55" (1030mm) of snow is accumulated.Daylight
The month with the shortest days is December, 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 December, the average sunshine is 4.4h.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 of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Caution! The reflection of snow 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
Is it cold during December?
What is the average humidity in December?
How many days 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 Glen Morgan have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Glen Morgan, WV
- Average high temperature in December: 42.4°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 (59.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in December
Glen Morgan, 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
Glen Morgan, 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
Glen Morgan, WV
- Average humidity in December: 82%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are June, July, August and November (78%).
Average rainfall in December
Glen Morgan, WV
- Average rainfall in December: 3.62"
The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Glen Morgan, WV
- Average rainfall days in December: 13.3 days
The month with the highest number of rainy days is May (22.3 days).
The month with the least rainy days is November (11.9 days).
Average snowfall in December
Glen Morgan, WV
- Average snowfall in December: 7.48"
The month with the highest snowfall is February (8.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Glen Morgan, WV
- Average snowfall days in December: 12.6 days
The month with the highest number of snowfall days is January (16.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Glen Morgan, 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 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Glen Morgan, WV
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is November (14.4 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in December
Glen Morgan, 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
Glen Morgan, WV
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Glen Morgan, 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).
Glen Morgan, West Virginia, USA
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