December weather forecast
Martinsville, OH

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Weather in December

December, the first month of the winter in Martinsville, is also a wintry month, with an average temperature ranging between max 40.1°F (4.5°C) and min 29.5°F (-1.4°C).

Temperature

A decrease in the average high-temperature is observed during December, shifting from a cool 50°F (10°C) in November to a wintry 40.1°F (4.5°C). In the month of December, Martinsville witnesses a consistent average low-temperature of 29.5°F (-1.4°C).

Humidity

The months with the highest humidity are January, February and December, with an average relative humidity of 82%.

Rainfall

In Martinsville, during December, the rain falls for 11.6 days and regularly aggregates up to 2.91" (74mm) of precipitation. Throughout the year, in Martinsville, there are 169.2 rainfall days, and 34.45" (875mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Martinsville, Ohio, are January through May, October through December. In Martinsville, in December, during 9.3 snowfall days, 2.76" (70mm) of snow is typically accumulated. In Martinsville, during the entire year, snow falls for 41.5 days and aggregates up to 14.92" (379mm) of snow.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of December in Martinsville, 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

The months with the lowest UV index in Martinsville are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 2 in December transforms into this advice:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

Is it cold in Martinsville during December?

During December, Martinsville experiences an average high-temperature of 40.1°F (4.5°C) and a low-temperature of 29.5°F (-1.4°C). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is estimated at 87.8°F (31°C).

What is the most humid month in Martinsville?

January, February and December, with an average relative humidity of 82%, are most humid months.

What is the average humidity in December in Martinsville?

In December, the average relative humidity is 82%.

How much does it rain in Martinsville in December?

In Martinsville, during December, the rain falls for 11.6 days and regularly aggregates up to 2.91" (74mm) of precipitation.

How many days does it snow in December in Martinsville?

In Martinsville, Ohio, during December, snow falls for 9.3 days and regularly aggregates up to 2.76" (70mm) of snow.

What is the month with the shortest days in Martinsville?

December has the shortest days of the year in Martinsville, with an average of 9h and 30min of daylight.

How many hours of daylight does Martinsville have in December?

In December, the average day length in Martinsville, Ohio, is 9h and 27min.

When is the sunrise / sunset in December in Martinsville?

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.

How many hours of sunshine does Martinsville have in December?

In Martinsville, the average sunshine duration in December is 4.1h.

When is the lowest UV index in Martinsville?

The months with the lowest UV index in Martinsville are January, February, November and December, with an average maximum UV index of 2.

What is the UV index intensity in December in Martinsville?

In December, the average daily maximum UV index in Martinsville, Ohio, is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Martinsville, OH

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).

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Average pressure in December
Martinsville, OH

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).

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Average wind speed in December
Martinsville, OH

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).

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Average humidity in December
Martinsville, OH

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%).

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Average rainfall in December
Martinsville, OH

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").

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Average rainfall days in December
Martinsville, OH

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).

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Average snowfall in December
Martinsville, OH

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").

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Average snowfall days in December
Martinsville, OH

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).

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Average daylight in December /
Average sunshine in December
Martinsville, OH

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).

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Average sunshine days in December
Martinsville, OH

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).

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Average UV index in December
Martinsville, OH

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).

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Average cloud cover in December
Martinsville, OH

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).

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Average visibility in December
Martinsville, OH

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).

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Martinsville, Ohio, USA

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