December weather forecast
Upton, WV

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Weather in December

The first month of the winter, December, is also a wintry month in Upton, West Virginia, with temperature in the range of an average low of 29.3°F (-1.5°C) and an average high of 41.5°F (5.3°C).

Temperature

December's arrival correlates with a reduction in the average high-temperature, down from a cool 50.5°F (10.3°C) in November to an icy 41.5°F (5.3°C). December brings with it a nighttime average temperature of 29.3°F (-1.5°C).

Humidity

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

Rainfall

In Upton, in December, during 13.1 rainfall days, 3.35" (85mm) of precipitation is typically accumulated. In Upton, during the entire year, the rain falls for 188.6 days and collects up to 39.17" (995mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 10.7 days. Throughout December, 4.29" (109mm) of snow is accumulated. Throughout the year, there are 52.1 snowfall days, and 24.21" (615mm) of snow is accumulated.

Daylight

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

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.

Frequently asked questions

Is it cold during December?

In December, the average high-temperature and low-temperature are 41.5°F (5.3°C) and 29.3°F (-1.5°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 87.8°F (31°C).

What is the average humidity in December?

In Upton, West Virginia, the average relative humidity in December is 82%.

How much does it rain in Upton in December?

In December, the rain falls for 13.1 days. Throughout December, 3.35" (85mm) of precipitation is accumulated.

How much does it snow in December?

In Upton, in December, snow falls for 10.7 days, with typically accumulated 4.29" (109mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does Upton have in December?

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

When are sunrise and sunset in December?

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 7:41 am and sunset at 5:07 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 3.5h.

What is the month 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 Upton?

In Upton, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health threat 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
Upton, WV

Average temperature in December - Upton, 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
Upton, WV

Average pressure in December - Upton, 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
Upton, WV

Average wind speed in December - Upton, 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
Upton, WV

Average humidity in December - Upton, 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
Upton, WV

Average rainfall in December - Upton, 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
Upton, WV

Average rainfall days in December - Upton, 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
Upton, WV

Average snowfall in December - Upton, 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
Upton, WV

Average snowfall days in December - Upton, 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
Upton, WV

Average daylight in December / Average sunshine in December - Upton, 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
Upton, WV

Average sunshine days in December - Upton, 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
Upton, WV

Average UV index in December - Upton, 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
Upton, WV

Average cloud cover in December - Upton, 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
Upton, WV

Average visibility in December - Upton, 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).

Upton, West Virginia, USA

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