December weather forecast
Martinsville, TX

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Weather in December

The first month of the winter, December, is still a refreshing month in Martinsville, Texas, with an average temperature fluctuating between 42.8°F (6°C) and 57.4°F (14.1°C).

Temperature

Martinsville's December weather shows a modest shift in high-temperatures, falling from November's comfortable 65.3°F (18.5°C) to a moderate 57.4°F (14.1°C). Nightly temperatures in Martinsville drop to an average low of 42.8°F (6°C) in December.

Humidity

In December, the average relative humidity in Martinsville is 81%.

Rainfall

In Martinsville, in December, it is raining for 12.6 days, with typically 3.03" (77mm) of accumulated precipitation. In Martinsville, during the entire year, the rain falls for 160.4 days and collects up to 35.83" (910mm) of precipitation.

Snowfall

January through March, September and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.6 snowfall days, it receives 0.12" (3mm) of snow. In Martinsville, during the entire year, snow falls for 2.6 days and aggregates up to 0.79" (20mm) of snow.

Daylight

With an average of 10h and 6min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:00 am and sunset at 5:13 pm. On the last day of December, sunrise is at 7:17 am and sunset at 5:24 pm CST.

Sunshine

With an average of 5h of sunshine, December has the least sunshine of the year in Martinsville.

UV index

January and December, with an average maximum UV index of 3, are months with the lowest UV index in Martinsville. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index, 3 during December, leads to the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What are December temperatures in Martinsville?

During December, Martinsville experiences an average high-temperature of 57.4°F (14.1°C) and a low-temperature of 42.8°F (6°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 104°F (40°C).

What is the average humidity in December in Martinsville?

The average relative humidity in December in Martinsville is 81%.

How much does it rain in Martinsville in December?

In Martinsville, in December, it is raining for 12.6 days, with typically 3.03" (77mm) of accumulated precipitation.

When does it start to snow in Martinsville?

December is the first month it typically snows in Martinsville, Texas. Throughout December, in the average 0.6 snowfall days, it receives 0.12" (3mm) of snow.

What is the month with the shortest days in Martinsville?

The month with the shortest days in Martinsville is December, with an average of 10h and 6min of daylight.

How many hours of daylight does Martinsville have in December?

In Martinsville, the average day length in December is 10h and 8min.

When are sunrise and sunset in December in Martinsville?

In December, on the first day of the month, sunrise is at 7:00 am and sunset at 5:13 pm. On the last day of the month, in Martinsville, Texas, sunrise is at 7:17 am and sunset at 5:24 pm CST.

What is the month with the least sunshine in Martinsville?

December has the least sunshine of the year, with an average of 5h of sunshine.

How many hours of sunshine does Martinsville have in December?

In December, the average sunshine duration is 5h.

What are the months with the lowest UV index in Martinsville?

The months with the lowest UV index are January and December, with an average maximum UV index of 3.

How high is the UV index in December in Martinsville?

In Martinsville, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
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, TX

Average temperature in December - Martinsville, TX
  • Average high temperature in December: 57.4°F

The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (55.8°F).

  • Average low temperature in December: 42.8°F

The month with the highest average low temperature is August (73.2°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).

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Average pressure in December
Martinsville, TX

Average pressure in December - Martinsville, TX
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Martinsville, TX

Average wind speed in December - Martinsville, TX
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).

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Average humidity in December
Martinsville, TX

Average humidity in December - Martinsville, TX
  • Average humidity in December: 81%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (70%).

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Average rainfall in December
Martinsville, TX

Average rainfall in December - Martinsville, TX
  • Average rainfall in December: 3.03"

The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is November (2.44").

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Average rainfall days in December
Martinsville, TX

Average rainfall days in December - Martinsville, TX
  • Average rainfall days in December: 12.6 days

The month with the highest number of rainy days is March (15.5 days).
The month with the least rainy days is November (10.2 days).

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Average snowfall in December
Martinsville, TX

Average snowfall in December - Martinsville, TX
  • Average snowfall in December: 0.12"

The month with the highest snowfall is January (0.39").
The months with the least snowfall are April, May, June, July, August, October and November (0").

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Average snowfall days in December
Martinsville, TX

Average snowfall days in December - Martinsville, TX
  • Average snowfall days in December: 0.6 days

The month with the highest number of snowfall days is January (0.9 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).

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

Average daylight in December / Average sunshine in December - Martinsville, TX
  • Average daylight in December: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in December
Martinsville, TX

Average sunshine days in December - Martinsville, TX
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is February (12.3 days).

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Average UV index in December
Martinsville, TX

Average UV index in December - Martinsville, TX
  • Average UV index in December: 3

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in December
Martinsville, TX

Average cloud cover in December - Martinsville, TX
  • Average cloud cover in December: 49

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in December
Martinsville, TX

Average visibility in December - Martinsville, TX
  • Average visibility in December: 5mi

The months with the highest visibility are June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, September and December (5mi).

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Martinsville, Texas, USA

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