December weather forecast
New Martinsville, WV

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Weather in December

Winter officially takes the reigns in December, causing temperatures to dip far below the yearly average once more. New Martinsville braces for the wintry season with average highs of 41.4°F (5.2°C) and lows sinking to 29.3°F (-1.5°C). The first snowfall usually graces the city, leaving behind a winter wonderland. Daylight hours are the shortest, residents and visitors equip themselves with warm clothing and bask in the beauty of a white Christmas. December brings a sense of joy and celebration despite the cold.

Temperature

The transition into December in New Martinsville is accompanied by a temperature decrease, with the average high-temperature shifting from a cool 50.7°F (10.4°C) in November to an icy 41.4°F (5.2°C). In the month of December, the temperature in New Martinsville generally rests at an average low of 29.3°F (-1.5°C).

Humidity

In New Martinsville, West Virginia, the average relative humidity in December is 83%.

Rainfall

In New Martinsville, in December, during 13.5 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In New Martinsville, during the entire year, the rain falls for 176.6 days and collects up to 25.91" (658mm) of precipitation.

Snowfall

Months with snowfall in New Martinsville are January through April, November and December. In New Martinsville, in December, snow falls for 10.2 days, with typically accumulated 2.05" (52mm) of snow. Throughout the year, there are 46.7 snowfall days, and 11.38" (289mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:25 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:09 pm EST.

Sunshine

The average sunshine in December is 3.7h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, a regular UV index of 1 translates into these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in New Martinsville?

The high-temperature, in December, in New Martinsville, is 41.4°F (5.2°C), while the low-temperature averages to 29.3°F (-1.5°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is appraised at 89.6°F (32°C).

What is the average humidity in December in New Martinsville?

The average relative humidity in December in New Martinsville is 83%.

How many days does it rain in December in New Martinsville?

In New Martinsville, West Virginia, in December, it is raining for 13.5 days, with typically 2.13" (54mm) of accumulated precipitation.

How much does it snow in New Martinsville in December?

In New Martinsville, West Virginia, in December, snow falls for 10.2 days, with typically accumulated 2.05" (52mm) of snow.

What is the month with the shortest days in New Martinsville?

December has the shortest days of the year in New Martinsville, with an average of 9h and 24min of daylight.

What is the average length of the day in December in New Martinsville?

The average day length in December in New Martinsville is 9h and 25min.

When are sunrise and sunset in December in New Martinsville?

In December, on the first day of the month, sunrise is at 7:25 am and sunset at 4:59 pm. On the last day of the month, in New Martinsville, sunrise is at 7:44 am and sunset at 5:09 pm EST.

How long on average sun shines in December in New Martinsville?

In December, the average sunshine duration in New Martinsville, West Virginia, is 3.7h.

What is the month with the lowest UV index in New Martinsville?

With an average maximum UV index of 1, December is the month with the lowest UV index in New Martinsville.

What is the UV index reading in December in New Martinsville?

In New Martinsville, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a low health risk 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
New Martinsville, WV

Average temperature in December - New Martinsville, WV
  • Average high temperature in December: 41.4°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

Average pressure in December
New Martinsville, WV

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

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
New Martinsville, WV

Average wind speed in December - New Martinsville, WV
  • Average wind speed in December: 6.4mph

The windiest months (with the highest average wind speed) are January and February (7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in December
New Martinsville, WV

Average humidity in December - New Martinsville, WV
  • Average humidity in December: 83%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (77%).

Average rainfall in December
New Martinsville, WV

Average rainfall in December - New Martinsville, WV
  • Average rainfall in December: 2.13"

The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is September (1.61").

Average rainfall days in December
New Martinsville, WV

Average rainfall days in December - New Martinsville, WV
  • Average rainfall days in December: 13.5 days

The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (10.2 days).

Average snowfall in December
New Martinsville, WV

Average snowfall in December - New Martinsville, WV
  • Average snowfall in December: 2.05"

The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
New Martinsville, WV

Average snowfall days in December - New Martinsville, WV
  • Average snowfall days in December: 10.2 days

The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
New Martinsville, WV

Average daylight in December / Average sunshine in December - New Martinsville, WV
  • Average daylight in December: 9h and 2min

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 24min).

  • Average sunshine in December: 3h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

Average sunshine days in December
New Martinsville, WV

Average sunshine days in December - New Martinsville, WV
  • Average sunshine days in December: 10.5 days

The month with the most sunshine days is November (16.9 days).
The months with the least sunshine days are January and February (8.7 days).

Average UV index in December
New Martinsville, WV

Average UV index in December - New Martinsville, WV
  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
New Martinsville, WV

Average cloud cover in December - New Martinsville, WV
  • Average cloud cover in December: 62

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in December
New Martinsville, WV

Average visibility in December - New Martinsville, WV
  • Average visibility in December: 5mi

The month with the highest visibility is November (6mi).
The month with the lowest visibility is January (4mi).

New Martinsville, West Virginia, USA

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