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
December comes with a decrease in the average high-temperature, falling from a fresh 50.7°F (10.4°C) in November to a cold 41.4°F (5.2°C). Dean, during the month of December, experiences an average low-temperature of 29.3°F (-1.5°C).Humidity
The average relative humidity in December is 83%.Rainfall
In Dean, during December, the rain falls for 13.5 days and regularly aggregates up to 2.13" (54mm) of precipitation. Throughout the year, there are 176.6 rainfall days, and 25.91" (658mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Dean, during December, snow falls for 10.2 days and regularly aggregates up to 2.05" (52mm) of snow. In Dean, during the entire year, snow falls for 46.7 days and aggregates up to 11.38" (289mm) of snow.Daylight
December has the shortest days of the year in Dean, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:24 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:08 pm EST.
Sunshine
In Dean, the average sunshine in December is 3.7h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A typical high UV index of 1 in December suggests the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Minimize direct exposure to the Sun during midday when its radiation is at its peak. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take note! UV radiation from the Sun can double in intensity due to 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 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 Dean have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Dean have in December?
What is the month with the lowest UV index?
How high is the UV index in December in Dean?
Average temperature in December
Dean, WV
- Average high temperature in December: 41.4°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in December
Dean, 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
Dean, WV
- Average wind speed in December: 6.4mph
The windiest months (with the highest average wind speed) are January and February (7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Dean, WV
- Average humidity in December: 83%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (77%).
Average rainfall in December
Dean, WV
- Average rainfall in December: 2.13"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in December
Dean, WV
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (10.2 days).
Average snowfall in December
Dean, WV
- Average snowfall in December: 2.05"
The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Dean, WV
- Average snowfall days in December: 10.2 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Dean, WV
- Average daylight in December: 9h and 2min
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 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Dean, WV
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is November (16.9 days).
The months with the least sunshine days are January and February (8.7 days).
Average UV index in December
Dean, WV
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Dean, WV
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Dean, WV
- Average visibility in December: 5mi
The month with the highest visibility is November (6mi).
The month with the lowest visibility is January (4mi).
Dean, West Virginia, USA
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