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
A shift in the average high-temperature occurs in December, reducing from a chilly 49.6°F (9.8°C) in November to a wintry 40.3°F (4.6°C). An average low-temperature of 28°F (-2.2°C) is common during the nights of December.Humidity
February and December, with an average relative humidity of 80%, are the most humid months in Keyser.Rainfall
In December, the rain falls for 11.5 days. Throughout December, 2.48" (63mm) of precipitation is accumulated. In Keyser, during the entire year, the rain falls for 166 days and collects up to 27.44" (697mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Keyser, in December, snow falls for 6.6 days, with typically accumulated 2.56" (65mm) of snow. In Keyser, during the entire year, snow falls for 34.6 days and aggregates up to 16.97" (431mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:17 am and sunset at 4:52 pm. On the last day of December, in Keyser, sunrise is at 7:35 am and sunset at 5:02 pm EST.
Sunshine
In Keyser, West Virginia, the average sunshine in December is 4.9h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Keyser. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
Is December cold in Keyser?
What is the most humid month in Keyser?
What is the average humidity in December in Keyser?
How many days does it rain in December in Keyser?
How much does it snow in Keyser in December?
What is the month with the shortest days in Keyser?
How many hours of daylight does Keyser have in December?
What time are sunrise and sunset in December in Keyser?
How many hours of sunshine does Keyser have in December?
When is the lowest UV index in Keyser?
How high is the UV index in December in Keyser?
Average temperature in December
Keyser, WV
- Average high temperature in December: 40.3°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 28°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 (21.4°F).
Average pressure in December
Keyser, WV
- Average pressure in December: 30.11"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
Keyser, WV
- Average wind speed in December: 7mph
The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Keyser, WV
- Average humidity in December: 80%
The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are April, June and July (75%).
Average rainfall in December
Keyser, WV
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is November (1.69").
Average rainfall days in December
Keyser, WV
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in December
Keyser, WV
- Average snowfall in December: 2.56"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Keyser, WV
- Average snowfall days in December: 6.6 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Keyser, 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: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in December
Keyser, WV
- Average sunshine days in December: 14.6 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in December
Keyser, 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, March, November and December (UV index 2).
Average cloud cover in December
Keyser, WV
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Keyser, WV
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Keyser, West Virginia, USA
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