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
As Martinsburg enters December, the average high-temperature decreases from the a chilly 47.3°F (8.5°C) of November to an icy 37.9°F (3.3°C). During the month of December, an average temperature of 27.1°F (-2.7°C) is noted during the nights in Martinsburg.Humidity
In Martinsburg, the average relative humidity in December is 82%.Rainfall
In Martinsburg, in December, it is raining for 11.7 days, with typically 2.52" (64mm) of accumulated precipitation. Throughout the year, in Martinsburg, Pennsylvania, there are 170.1 rainfall days, and 29.69" (754mm) of precipitation is accumulated.Snowfall
Months with snowfall in Martinsburg are January through May, October through December. In Martinsburg, in December, snow falls for 9.4 days, with typically accumulated 3.7" (94mm) of snow. Throughout the year, there are 52.3 snowfall days, and 25.55" (649mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Martinsburg.On the first day of December in Martinsburg, Pennsylvania, sunrise is at 7:17 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:57 pm EST.
Sunshine
In Martinsburg, the average sunshine in December is 4.2h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Martinsburg. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold does it get in Martinsburg in December?
What is the average humidity in December in Martinsburg?
How much does it rain in Martinsburg in December?
How much does it snow in Martinsburg in December?
What is the month with the shortest days in Martinsburg?
How many hours of daylight does Martinsburg have in December?
When is the sunrise / sunset in December in Martinsburg?
How many hours of sunshine does Martinsburg have in December?
When is the lowest UV index in Martinsburg?
What is the UV index intensity in December in Martinsburg?
Average temperature in December
Martinsburg, PA
- Average high temperature in December: 37.9°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 (31.8°F).
- Average low temperature in December: 27.1°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in December
Martinsburg, PA
- 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
Martinsburg, PA
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Martinsburg, PA
- Average humidity in December: 82%
The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in December
Martinsburg, PA
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in December
Martinsburg, PA
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (9.9 days).
Average snowfall in December
Martinsburg, PA
- Average snowfall in December: 3.7"
The month with the highest snowfall is February (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Martinsburg, PA
- Average snowfall days in December: 9.4 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Martinsburg, PA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Martinsburg, PA
- Average sunshine days in December: 12.7 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (9.2 days).
Average UV index in December
Martinsburg, PA
- 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
Martinsburg, PA
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Martinsburg, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Martinsburg, Pennsylvania, USA
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