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
With December's arrival, Martinsburg sees a decrease in average high-temperatures, moving from a fresh 52.5°F (11.4°C) in November to a wintry 41°F (5°C). During December, the average low-temperature is a freezing cold 28.4°F (-2°C).Humidity
In Martinsburg, the average relative humidity in December is 77%.Rainfall
In Martinsburg, during December, the rain falls for 6.5 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Martinsburg, during the entire year, the rain falls for 139.8 days and collects up to 28.7" (729mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 4 days. Throughout December, 1.54" (39mm) of snow is accumulated. In Martinsburg, during the entire year, snow falls for 19.7 days and aggregates up to 9.49" (241mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:07 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:54 pm CST.
Sunshine
In Martinsburg, Missouri, the average sunshine in December is 4.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Martinsburg. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: The UV index of 2 during December leads to these advisories:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Boost your sun resistance with garments that are densely woven yet spacious. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Martinsburg, MO
- Average high temperature in December: 41°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in December: 28.4°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Martinsburg, MO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Martinsburg, MO
- Average wind speed in December: 9mph
The windiest months (with the highest average wind speed) are January and February (9.3mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in December
Martinsburg, MO
- Average humidity in December: 77%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Martinsburg, MO
- Average rainfall in December: 1.73"
The wettest month (with the highest rainfall) is May (3.39").
The driest months (with the least rainfall) are January and February (1.46").
Average rainfall days in December
Martinsburg, MO
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is December (6.5 days).
Average snowfall in December
Martinsburg, MO
- Average snowfall in December: 1.54"
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Martinsburg, MO
- Average snowfall days in December: 4 days
The month with the highest number of snowfall days is February (5.9 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
Martinsburg, MO
- Average daylight in December: 9h and 3min
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 30min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
Martinsburg, MO
- Average sunshine days in December: 20 days
The month with the most sunshine days is December (20 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in December
Martinsburg, MO
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Martinsburg, MO
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Martinsburg, MO
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Martinsburg, Missouri, USA
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