December weather forecast
Chelsea, VA

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Weather in December

December, the first month of the winter in Chelsea, is still a chilly month, with temperature in the range of an average low of 34.9°F (1.6°C) and an average high of 49.1°F (9.5°C).

Temperature

The shift from November to December includes a minor decrease in the average high-temperature, lightly dropping from a mild 56.7°F (13.7°C) to a chilly 49.1°F (9.5°C). During December, the average low-temperature is a cold 34.9°F (1.6°C).

Humidity

The most humid month is December, with an average relative humidity of 78%.

Rainfall

In Chelsea, in December, during 10.1 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, in Chelsea, there are 151.1 rainfall days, and 26.22" (666mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. In Chelsea, in December, during 1.5 snowfall days, 1.5" (38mm) of snow is typically accumulated. In Chelsea, during the entire year, snow falls for 10.5 days and aggregates up to 6.42" (163mm) of snow.

Daylight

With an average of 9h and 36min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:08 am and sunset at 4:52 pm. On the last day of December, sunrise is at 7:26 am and sunset at 5:03 pm EST.

Sunshine

December has the least sunshine of the year, with an average of 5.2h of sunshine.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Enhance your sun protection with tightly woven, yet airy clothing. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in December?

In December, in Chelsea, the average high-temperature is 49.1°F (9.5°C), and the average low-temperature is 34.9°F (1.6°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is computed to be 86°F (30°C).

What is the most humid month?

With an average relative humidity of 78%, December is the most humid month.

What is the average humidity in December?

In Chelsea, the average relative humidity in December is 78%.

How much does it rain in December?

In Chelsea, in December, it is raining for 10.1 days, with typically 1.93" (49mm) of accumulated precipitation.

How many days does it snow in December?

In Chelsea, in December, during 1.5 snowfall days, 1.5" (38mm) of snow is typically accumulated.

What is the month with the shortest days?

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

How many hours of daylight does Chelsea have in December?

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

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:03 pm EST.

What is the month with the least sunshine?

With an average of 5.2h of sunshine, December has the least sunshine of the year.

How many hours of sunshine does Chelsea have in December?

In December, the average sunshine duration is 5.2h.

When is the lowest UV index?

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

How high is the UV index in December?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal hazard to health 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
Chelsea, VA

Average temperature in December - Chelsea, VA
  • Average high temperature in December: 49.1°F

The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (44.2°F).

  • Average low temperature in December: 34.9°F

The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).

Average pressure in December
Chelsea, VA

Average pressure in December - Chelsea, VA
  • 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).

Average wind speed in December
Chelsea, VA

Average wind speed in December - Chelsea, VA
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in December
Chelsea, VA

Average humidity in December - Chelsea, VA
  • Average humidity in December: 78%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (68%).

Average rainfall in December
Chelsea, VA

Average rainfall in December - Chelsea, VA
  • Average rainfall in December: 1.93"

The wettest month (with the highest rainfall) is August (2.72").
The driest month (with the least rainfall) is September (1.65").

Average rainfall days in December
Chelsea, VA

Average rainfall days in December - Chelsea, VA
  • Average rainfall days in December: 10.1 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in December
Chelsea, VA

Average snowfall in December - Chelsea, VA
  • Average snowfall in December: 1.5"

The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Chelsea, VA

Average snowfall days in December - Chelsea, VA
  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is February (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Chelsea, VA

Average daylight in December / Average sunshine in December - Chelsea, VA
  • 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: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

Average sunshine days in December
Chelsea, VA

Average sunshine days in December - Chelsea, VA
  • Average sunshine days in December: 19.2 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.9 days).

Average UV index in December
Chelsea, VA

Average UV index in December - Chelsea, VA
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in December
Chelsea, VA

Average cloud cover in December - Chelsea, VA
  • Average cloud cover in December: 44

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in December
Chelsea, VA

Average visibility in December - Chelsea, VA
  • Average visibility in December: 6mi

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

Chelsea, Virginia, USA

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