December weather forecast
Harmony Grove, WV

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Weather in December

The first month of the winter, December, is still a cold month in Harmony Grove, West Virginia, with an average temperature ranging between min 29.3°F (-1.5°C) and max 40.6°F (4.8°C).

Temperature

During Harmony Grove's transition into December, the average high-temperature lessens, moving from a fresh 50°F (10°C) in November to an icy 40.6°F (4.8°C). Throughout December, Harmony Grove anticipates an average low-temperature of 29.3°F (-1.5°C).

Humidity

In December, the average relative humidity in Harmony Grove is 83%.

Rainfall

In Harmony Grove, in December, during 13 rainfall days, 3.19" (81mm) of precipitation is typically accumulated. Throughout the year, there are 187.8 rainfall days, and 36.46" (926mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Harmony Grove, during December, snow falls for 13.1 days and regularly aggregates up to 6.14" (156mm) of snow. In Harmony Grove, during the entire year, snow falls for 63.1 days and aggregates up to 32.32" (821mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year in Harmony Grove.
On the first day of December, sunrise is at 7:22 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:06 pm EST.

Sunshine

In December, the average sunshine is 3.8h.

UV index

December is the month with the lowest UV index in Harmony Grove, 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 average individuals.
Note: A daily high UV index of 1 in December leads to these guidelines:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

Is December cold in Harmony Grove?

An average high-temperature, in December, in Harmony Grove, is 40.6°F (4.8°C) and the average low-temperature is 29.3°F (-1.5°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is evaluated at 87.8°F (31°C).

What is the average humidity in December in Harmony Grove?

In December, the average relative humidity is 83%.

How many days does it rain in December in Harmony Grove?

In Harmony Grove, in December, it is raining for 13 days, with typically 3.19" (81mm) of accumulated precipitation.

How many days does it snow in December in Harmony Grove?

In Harmony Grove, in December, during 13.1 snowfall days, 6.14" (156mm) of snow is typically accumulated.

What is the month with the shortest days in Harmony Grove?

The month with the shortest days in Harmony Grove, West Virginia, is December, with an average of 9h and 24min of daylight.

What is the average length of the day in December in Harmony Grove?

In December, the average day length is 9h and 26min.

When are sunrise and sunset in December in Harmony Grove?

In December, on the first day of the month, sunrise is at 7:22 am and sunset at 4:56 pm. On the last day of the month, in Harmony Grove, West Virginia, sunrise is at 7:40 am and sunset at 5:06 pm EST.

How many hours of sunshine does Harmony Grove have in December?

In Harmony Grove, the average sunshine duration in December is 3.8h.

When is the lowest UV index in Harmony Grove?

The month with the lowest UV index in Harmony Grove is December, with an average maximum UV index of 1.

What is the UV index intensity in December in Harmony Grove?

In December, the average daily maximum UV index in Harmony Grove is 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's 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
Harmony Grove, WV

Average temperature in December - Harmony Grove, WV
  • Average high temperature in December: 40.6°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (34.5°F).

  • Average low temperature in December: 29.3°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 (21.6°F).

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Average pressure in December
Harmony Grove, WV

Average pressure in December - Harmony Grove, 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).

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Average wind speed in December
Harmony Grove, WV

Average wind speed in December - Harmony Grove, WV
  • Average wind speed in December: 6.8mph

The windiest month (with the highest average wind speed) is January (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in December
Harmony Grove, WV

Average humidity in December - Harmony Grove, WV
  • Average humidity in December: 83%

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

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Average rainfall in December
Harmony Grove, WV

Average rainfall in December - Harmony Grove, WV
  • Average rainfall in December: 3.19"

The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is September (2.17").

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Average rainfall days in December
Harmony Grove, WV

Average rainfall days in December - Harmony Grove, WV
  • Average rainfall days in December: 13 days

The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is January (11.1 days).

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Average snowfall in December
Harmony Grove, WV

Average snowfall in December - Harmony Grove, WV
  • Average snowfall in December: 6.14"

The month with the highest snowfall is February (7.76").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Harmony Grove, WV

Average snowfall days in December - Harmony Grove, WV
  • Average snowfall days in December: 13.1 days

The month with the highest number of snowfall days is January (17 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
Harmony Grove, WV

Average daylight in December / Average sunshine in December - Harmony Grove, 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 5min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in December
Harmony Grove, WV

Average sunshine days in December - Harmony Grove, WV
  • Average sunshine days in December: 10 days

The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.7 days).

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Average UV index in December
Harmony Grove, WV

Average UV index in December - Harmony Grove, WV
  • Average UV index in December: 1

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

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Average cloud cover in December
Harmony Grove, WV

Average cloud cover in December - Harmony Grove, WV
  • Average cloud cover in December: 63

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in December
Harmony Grove, WV

Average visibility in December - Harmony Grove, 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).

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Harmony Grove, West Virginia, USA

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