December weather forecast
Lyonsville, WV

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Weather in December

The first month of the winter, December, is still a chilly month in Lyonsville, West Virginia, with an average temperature fluctuating between 30.4°F (-0.9°C) and 42.8°F (6°C).

Temperature

In Lyonsville, the beginning of December is marked by a marginally lowered average high-temperature, shifting from November's cool 51.3°F (10.7°C) to a chilly 42.8°F (6°C). Lyonsville observes an average low-temperature of 30.4°F (-0.9°C) during December.

Humidity

In December, the average relative humidity is 82%.

Rainfall

In December, the rain falls for 13 days. Throughout December, 2.72" (69mm) of precipitation is accumulated. In Lyonsville, during the entire year, the rain falls for 176.2 days and collects up to 30.55" (776mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Lyonsville, West Virginia, during December, snow falls for 9.7 days and regularly aggregates up to 3.74" (95mm) of snow. Throughout the year, in Lyonsville, there are 48.4 snowfall days, and 21.34" (542mm) of snow is accumulated.

Daylight

With an average of 9h and 36min of daylight, December has the shortest days of the year in Lyonsville.
On the first day of December in Lyonsville, sunrise is at 7:22 am and sunset at 5:04 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:14 pm EST.

Sunshine

In December, the average sunshine in Lyonsville is 4.3h.

UV index

The months with the lowest UV index in Lyonsville 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 the average person.
Note: A maximum UV index of 2 in December translates into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
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Frequently asked questions

How cold is it in Lyonsville in December?

The high-temperature during December is 42.8°F (6°C) and the low-temperature is 30.4°F (-0.9°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 87.8°F (31°C).

What is the average humidity in December in Lyonsville?

The average relative humidity in December in Lyonsville is 82%.

How many days does it rain in December in Lyonsville?

In Lyonsville, West Virginia, in December, during 13 rainfall days, 2.72" (69mm) of precipitation is typically accumulated.

How much does it snow in Lyonsville in December?

In Lyonsville, in December, snow falls for 9.7 days, with typically accumulated 3.74" (95mm) of snow.

What is the month with the shortest days in Lyonsville?

The month with the shortest days in Lyonsville, West Virginia, is December, with an average of 9h and 36min of daylight.

What is the average length of the day in December in Lyonsville?

The average day length in December in Lyonsville is 9h and 34min.

When is the sunrise / sunset in December in Lyonsville?

On the first day of December in Lyonsville, West Virginia, sunrise is at 7:22 am and sunset at 5:04 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:14 pm EST.

How long on average sun shines in December in Lyonsville?

In Lyonsville, the average sunshine duration in December is 4.3h.

When is the lowest UV index in Lyonsville?

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

What is the UV index reading in December in Lyonsville?

In December, the average daily maximum UV index in Lyonsville is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from unprotected exposure to 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
Lyonsville, WV

Average temperature in December - Lyonsville, WV
  • Average high temperature in December: 42.8°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in December: 30.4°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).

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Average pressure in December
Lyonsville, WV

Average pressure in December - Lyonsville, 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 (29.98"Hg).

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Average wind speed in December
Lyonsville, WV

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

The windiest month (with the highest average wind speed) is February (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity in December
Lyonsville, WV

Average humidity in December - Lyonsville, WV
  • Average humidity in December: 82%

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

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Average rainfall in December
Lyonsville, WV

Average rainfall in December - Lyonsville, WV
  • Average rainfall in December: 2.72"

The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is September (1.54").

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Average rainfall days in December
Lyonsville, WV

Average rainfall days in December - Lyonsville, WV
  • Average rainfall days in December: 13 days

The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is November (11 days).

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Average snowfall in December
Lyonsville, WV

Average snowfall in December - Lyonsville, WV
  • Average snowfall in December: 3.74"

The month with the highest snowfall is January (5.59").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Lyonsville, WV

Average snowfall days in December - Lyonsville, WV
  • Average snowfall days in December: 9.7 days

The month with the highest number of snowfall days is January (14.3 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
Lyonsville, WV

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 4h and 2min

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 48min).

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Average sunshine days in December
Lyonsville, WV

Average sunshine days in December - Lyonsville, WV
  • Average sunshine days in December: 11 days

The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is January (8.4 days).

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Average UV index in December
Lyonsville, WV

Average UV index in December - Lyonsville, WV
  • 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
Lyonsville, WV

Average cloud cover in December - Lyonsville, WV
  • Average cloud cover in December: 58

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in December
Lyonsville, WV

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

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

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Lyonsville, West Virginia, USA

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