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
Martinsville's average high-temperature decreases in December, falling from a cool 50°F (10°C) in November to a wintry 40.1°F (4.5°C). Martinsville records an average low of 29.5°F (-1.4°C) throughout the nights in December.Humidity
The months with the highest humidity are January, February and December, with an average relative humidity of 82%.Rainfall
In December, the rain falls for 11.6 days. Throughout December, 2.91" (74mm) of precipitation is accumulated. In Martinsville, during the entire year, the rain falls for 169.2 days and collects up to 34.45" (875mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Martinsville, in December, snow falls for 9.3 days, with typically accumulated 2.76" (70mm) of snow. Throughout the year, there are 41.5 snowfall days, and 14.92" (379mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:36 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 5:22 pm EST.
Sunshine
In Martinsville, the average sunshine in December is 4.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Martinsville have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Martinsville, OH
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 29.5°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in December
Martinsville, OH
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Martinsville, OH
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in December
Martinsville, OH
- Average humidity in December: 82%
The months with the highest relative humidity are January, February and December (82%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Martinsville, OH
- Average rainfall in December: 2.91"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
Martinsville, OH
- Average rainfall days in December: 11.6 days
The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is February (9 days).
Average snowfall in December
Martinsville, OH
- Average snowfall in December: 2.76"
The month with the highest snowfall is February (3.78").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Martinsville, OH
- Average snowfall days in December: 9.3 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Martinsville, OH
- 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Martinsville, OH
- Average sunshine days in December: 12.3 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is May (8.7 days).
Average UV index in December
Martinsville, OH
- 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
Martinsville, OH
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Martinsville, OH
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Martinsville, Ohio, USA
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