December weather forecast
Helens Run, WV

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Weather in December

December, the first month of the winter in Helens Run, is still a cold month, with temperature in the range of an average high of 41.5°F (5.3°C) and an average low of 29.3°F (-1.5°C).

Temperature

December suggests a modest reduction in the average high-temperature, shifting from a fresh 50.5°F (10.3°C) in November to a cold 41.5°F (5.3°C). The low-temperature averages to a freezing cold 29.3°F (-1.5°C) during the nights of December.

Humidity

In December, the average relative humidity is 82%.

Rainfall

In December, the rain falls for 13.1 days. Throughout December, 3.35" (85mm) of precipitation is accumulated. Throughout the year, there are 188.6 rainfall days, and 39.17" (995mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Helens Run, West Virginia, during December, snow falls for 10.7 days and regularly aggregates up to 4.29" (109mm) of snow. Throughout the year, there are 52.1 snowfall days, and 24.21" (615mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:22 am and sunset at 4:57 pm. On the last day of December, sunrise is at 7:41 am and sunset at 5:07 pm EST.

Sunshine

The average sunshine in December is 3.5h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 2 in December translates into these instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

December temperatures vary between a high-temperature of 41.5°F (5.3°C) and a low-temperature of 29.3°F (-1.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is estimated at 87.8°F (31°C).

What is the average humidity in December?

In Helens Run, the average relative humidity in December is 82%.

How many days does it rain in December?

In Helens Run, in December, it is raining for 13.1 days, with typically 3.35" (85mm) of accumulated precipitation.

How much does it snow in December?

In Helens Run, in December, during 10.7 snowfall days, 4.29" (109mm) of snow is typically accumulated.

What is the month with the shortest days?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

The average day length in December is 9h and 26min.

What time are sunrise and sunset in December in Helens Run?

In December, on the first day of the month, sunrise is at 7:22 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:07 pm EST.

How many hours of sunshine does Helens Run have in December?

The average sunshine duration in December is 3.5h.

What are the months with the lowest UV index?

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

What is the UV index reading in December?

In Helens Run, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health threat 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
Helens Run, WV

Average temperature in December - Helens Run, WV
  • Average high temperature in December: 41.5°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (35.8°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in December
Helens Run, WV

Average pressure in December - Helens Run, 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 (29.96"Hg).

Average wind speed in December
Helens Run, WV

Average wind speed in December - Helens Run, WV
  • Average wind speed in December: 6.3mph

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
Helens Run, WV

Average humidity in December - Helens Run, WV
  • Average humidity in December: 82%

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

Average rainfall in December
Helens Run, WV

Average rainfall in December - Helens Run, WV
  • Average rainfall in December: 3.35"

The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is November (2.24").

Average rainfall days in December
Helens Run, WV

Average rainfall days in December - Helens Run, WV
  • Average rainfall days in December: 13.1 days

The month with the highest number of rainy days is May (21.3 days).
The month with the least rainy days is January (10.8 days).

Average snowfall in December
Helens Run, WV

Average snowfall in December - Helens Run, WV
  • Average snowfall in December: 4.29"

The month with the highest snowfall is February (6.18").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Helens Run, WV

Average snowfall days in December - Helens Run, WV
  • Average snowfall days in December: 10.7 days

The month with the highest number of snowfall days is January (15 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Helens Run, WV

Average daylight in December / Average sunshine in December - Helens Run, 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 3min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

Average sunshine days in December
Helens Run, WV

Average sunshine days in December - Helens Run, WV
  • Average sunshine days in December: 10.8 days

The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is May (7.8 days).

Average UV index in December
Helens Run, WV

Average UV index in December - Helens Run, WV
  • Average UV index in December: 2

The months with the highest UV index are May and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Helens Run, WV

Average cloud cover in December - Helens Run, WV
  • Average cloud cover in December: 64

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in December
Helens Run, WV

Average visibility in December - Helens Run, WV
  • Average visibility in December: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).

Helens Run, West Virginia, USA

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