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
Martinsburg in December experiences a subtle temperature decline, with average high-temperatures reducing from an icy 41.9°F (5.5°C) in November to a freezing cold 31.1°F (-0.5°C). A consistent average low-temperature of 22.1°F (-5.5°C), with a minor variance from the daytime highs, is noted during the nights of December.Humidity
In Martinsburg, the average relative humidity in December is 87%.Rainfall
In Martinsburg, during December, the rain falls for 10.9 days and regularly aggregates up to 3.78" (96mm) of precipitation. Throughout the year, there are 174 rainfall days, and 40.2" (1021mm) of precipitation is accumulated.Snowfall
Months with snowfall in Martinsburg are January through May, October through December. In Martinsburg, in December, snow falls for 18.4 days, with typically accumulated 12.76" (324mm) of snow. Throughout the year, there are 98.6 snowfall days, and 60.59" (1539mm) of snow is accumulated.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:16 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:34 pm EST.
Sunshine
The average sunshine in December is 2.8h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Martinsburg, NY
- Average high temperature in December: 31.1°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (24.6°F).
- Average low temperature in December: 22.1°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in December
Martinsburg, NY
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Martinsburg, NY
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Martinsburg, NY
- Average humidity in December: 87%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (78%).
Average rainfall in December
Martinsburg, NY
- Average rainfall in December: 3.78"
The wettest month (with the highest rainfall) is October (4.17").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in December
Martinsburg, NY
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is August (18.9 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in December
Martinsburg, NY
- Average snowfall in December: 12.76"
The month with the highest snowfall is January (14.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Martinsburg, NY
- Average snowfall days in December: 18.4 days
The month with the highest number of snowfall days is January (22 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, NY
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 2h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).
Average sunshine days in December
Martinsburg, NY
- Average sunshine days in December: 7.4 days
The month with the most sunshine days is September (13.5 days).
The month with the least sunshine days is February (4.7 days).
Average UV index in December
Martinsburg, NY
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Martinsburg, NY
- Average cloud cover in December: 72
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in December
Martinsburg, NY
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Martinsburg, New York, USA
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