December weather forecast
Westchester, WV

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Weather in December

December, the first month of the winter in Westchester, is also a wintry month, with an average temperature ranging between min 29.7°F (-1.3°C) and max 41.7°F (5.4°C).

Temperature

December's arrival aligns with a minor decrease in average high-temperatures, from November's cool 50.4°F (10.2°C) to a wintry 41.7°F (5.4°C). Westchester experiences a steady low-temperature of 29.7°F (-1.3°C) throughout December.

Humidity

In December, the average relative humidity is 83%.

Rainfall

In Westchester, in December, during 13.5 rainfall days, 3.19" (81mm) of precipitation is typically accumulated. In Westchester, during the entire year, the rain falls for 182.4 days and collects up to 36.1" (917mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Westchester, during December, snow falls for 12.2 days and regularly aggregates up to 5.28" (134mm) of snow. In Westchester, during the entire year, snow falls for 58.4 days and aggregates up to 29.09" (739mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:22 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:07 pm EST.

Sunshine

In December, the average sunshine is 3.7h.

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 value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

How cold does it get in December?

Westchester in December has an average high-temperature of 41.7°F (5.4°C) and an average low-temperature of 29.7°F (-1.3°C). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 87.8°F (31°C).

What is the average humidity in December?

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

How much does it rain in December?

In Westchester, in December, it is raining for 13.5 days, with typically 3.19" (81mm) of accumulated precipitation.

How many days does it snow in December?

In Westchester, in December, snow falls for 12.2 days, with typically accumulated 5.28" (134mm) of snow.

What is the month with the shortest days?

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

What is the average length of the day in December?

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

What time are sunrise and sunset in December in Westchester?

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, in Westchester, sunrise is at 7:40 am and sunset at 5:07 pm EST.

How many hours of sunshine does Westchester have in December?

The average sunshine duration in December is 3.7h.

When is 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?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health risk 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
Westchester, WV

Average temperature in December - Westchester, WV
  • Average high temperature in December: 41.7°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in December: 29.7°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).

Average pressure in December
Westchester, WV

Average pressure in December - Westchester, 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
Westchester, WV

Average wind speed in December - Westchester, 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
Westchester, WV

Average humidity in December - Westchester, WV
  • Average humidity in December: 83%

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
Westchester, WV

Average rainfall in December - Westchester, WV
  • Average rainfall in December: 3.19"

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is September (2.13").

Average rainfall days in December
Westchester, WV

Average rainfall days in December - Westchester, WV
  • Average rainfall days in December: 13.5 days

The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is January (10.8 days).

Average snowfall in December
Westchester, WV

Average snowfall in December - Westchester, WV
  • Average snowfall in December: 5.28"

The month with the highest snowfall is January (7.28").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Westchester, WV

Average snowfall days in December - Westchester, WV
  • Average snowfall days in December: 12.2 days

The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Westchester, 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: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days in December
Westchester, WV

Average sunshine days in December - Westchester, WV
  • Average sunshine days in December: 9.7 days

The month with the most sunshine days is November (14.5 days).
The month with the least sunshine days is January (6.8 days).

Average UV index in December
Westchester, WV

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

The months with the highest UV index are May, June 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
Westchester, WV

Average cloud cover in December - Westchester, WV
  • Average cloud cover in December: 63

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 36).

Average visibility in December
Westchester, WV

Average visibility in December - Westchester, 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).

Westchester, West Virginia, USA

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