December weather forecast
Helen, WV

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Weather in December

December, the first month of the winter in Helen, is still a chilly month, with an average temperature fluctuating between 43.5°F (6.4°C) and 30.7°F (-0.7°C).

Temperature

December's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a cool 52°F (11.1°C) in November to a chilly 43.5°F (6.4°C). During the month of December, the nighttime temperature falls to an average of 30.7°F (-0.7°C).

Humidity

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

Rainfall

In Helen, in December, during 12.4 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. Throughout the year, there are 180.7 rainfall days, and 32.24" (819mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 10.5 days. Throughout December, 5.55" (141mm) of snow is accumulated. Throughout the year, there are 50.3 snowfall days, and 27.09" (688mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:22 am and sunset at 5:07 pm. On the last day of December, sunrise is at 7:40 am and sunset at 5:17 pm EST.

Sunshine

The average sunshine in December is 4.6h.

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 unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 2 in December leads to these guidelines:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.

Frequently asked questions

How cold is it in December?

The average high-temperature, in December, in Helen, is 43.5°F (6.4°C), while the average low-temperature is 30.7°F (-0.7°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 81%.

How much does it rain in December?

In December, the rain falls for 12.4 days. Throughout December, 3.15" (80mm) of precipitation is accumulated.

How many days does it snow in December?

In December, it is snowing for 10.5 days. Throughout December, 5.55" (141mm) of snow is accumulated.

What is the month with the shortest days?

With an average of 9h and 36min of daylight, December has the shortest days of the year in Helen.

How many hours of daylight does Helen have in December?

In Helen, the average day length in December is 9h and 37min.

When are sunrise and sunset in December?

On the first day of December in Helen, sunrise is at 7:22 am and sunset at 5:07 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:17 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 4.6h.

What is the month with the lowest UV index?

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

What is the UV index intensity in December?

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

Average temperature in December - Helen, WV
  • Average high temperature in December: 43.5°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (38.3°F).

  • Average low temperature in December: 30.7°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in December
Helen, WV

Average pressure in December - Helen, WV
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

Average wind speed in December
Helen, WV

Average wind speed in December - Helen, WV
  • Average wind speed in December: 6.6mph

The windiest month (with the highest average wind speed) is January (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in December
Helen, WV

Average humidity in December - Helen, WV
  • Average humidity in December: 81%

The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are June, July, August and November (77%).

Average rainfall in December
Helen, WV

Average rainfall in December - Helen, WV
  • Average rainfall in December: 3.15"

The wettest months (with the highest rainfall) are February and May (3.43").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in December
Helen, WV

Average rainfall days in December - Helen, WV
  • Average rainfall days in December: 12.4 days

The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is November (11.3 days).

Average snowfall in December
Helen, WV

Average snowfall in December - Helen, WV
  • Average snowfall in December: 5.55"

The month with the highest snowfall is February (6.02").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Helen, WV

Average snowfall days in December - Helen, WV
  • Average snowfall days in December: 10.5 days

The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Helen, WV

Average daylight in December / Average sunshine in December - Helen, WV
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 4h 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: 4h and 12min).

Average sunshine days in December
Helen, WV

Average sunshine days in December - Helen, WV
  • Average sunshine days in December: 11.7 days

The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is February (8.3 days).

Average UV index in December
Helen, WV

Average UV index in December - Helen, WV
  • Average UV index in December: 2

The months with the highest UV index are June 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
Helen, WV

Average cloud cover in December - Helen, WV
  • Average cloud cover in December: 57

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 36).

Average visibility in December
Helen, WV

Average visibility in December - Helen, WV
  • Average visibility in December: 5mi

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

Helen, West Virginia, USA

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