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 move into December indicates a slight reduction in the average high-temperature, down from November's frosty 48.9°F (9.4°C) to an icy 40.5°F (4.7°C). In Crawley, the December nights cool down to an average low of 28.4°F (-2°C).Humidity
In December, the average relative humidity is 83%.Rainfall
In December, the rain falls for 11.9 days. Throughout December, 3.31" (84mm) of precipitation is accumulated. In Crawley, during the entire year, the rain falls for 181.7 days and collects up to 35.31" (897mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Crawley, during December, snow falls for 9.7 days and regularly aggregates up to 6.93" (176mm) of snow. In Crawley, West Virginia, during the entire year, snow falls for 50.2 days and aggregates up to 32.83" (834mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:20 am and sunset at 5:03 pm. On the last day of December, sunrise is at 7:38 am and sunset at 5:13 pm EST.
Sunshine
In Crawley, the average sunshine in December is 4.3h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
How much 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 Crawley have in December?
What time are sunrise and sunset in December in Crawley?
How many hours of sunshine does Crawley have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Crawley, WV
- Average high temperature in December: 40.5°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 (35.1°F).
- Average low temperature in December: 28.4°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Crawley, 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
Crawley, 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
Crawley, WV
- Average humidity in December: 83%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are June, July and November (79%).
Average rainfall in December
Crawley, WV
- Average rainfall in December: 3.31"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
Crawley, WV
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is May (21.9 days).
The month with the least rainy days is February (9.1 days).
Average snowfall in December
Crawley, WV
- Average snowfall in December: 6.93"
The month with the highest snowfall is February (7.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Crawley, WV
- Average snowfall days in December: 9.7 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Crawley, 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 July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Crawley, WV
- Average sunshine days in December: 12.3 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (7.4 days).
Average UV index in December
Crawley, 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, March, November and December (UV index 2).
Average cloud cover in December
Crawley, WV
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are June and August (Cloud cover 41).
Average visibility in December
Crawley, WV
- Average visibility in December: 4mi
The months with the highest visibility are March, April, June, July and November (5mi).
The months with the lowest visibility are January, February, May, August, September, October and December (4mi).
Crawley, West Virginia, USA
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