December weather forecast
Winchester, VA

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Weather in December

December welcomes winter back in Winchester, painting the cityscape in stark contrasts. The city slips into its coldest phase, with maximum temperatures averaging around 43.2°F (6.2°C). It is a time of calm and contemplation, perfect for indulging in indoor activities. Snow increases considerably this month, adding to the city’s magical winter charm just in time for the festive season.

Temperature

In December, the average high-temperature in Winchester marginally drops from a cool 52.2°F (11.2°C) in November to a frosty 43.2°F (6.2°C). Winchester observes an average nighttime temperature of 29.7°F (-1.3°C) during December.

Humidity

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

Rainfall

In December, the rain falls for 11 days. Throughout December, 2.4" (61mm) of precipitation is accumulated. In Winchester, during the entire year, the rain falls for 167.2 days and collects up to 29.61" (752mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Winchester, during December, snow falls for 4.5 days and regularly aggregates up to 3.15" (80mm) of snow. Throughout the year, there are 26.2 snowfall days, and 17.83" (453mm) of snow is accumulated.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:13 am and sunset at 4:50 pm. On the last day of December, sunrise is at 7:31 am and sunset at 5:00 pm EST.

Sunshine

The average sunshine in December is 5.2h.

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 of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in Winchester in December?

December temperatures in Winchester vary between a high-temperature of 43.2°F (6.2°C) and a low-temperature of 29.7°F (-1.3°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 91.4°F (33°C).

What is the average humidity in December in Winchester?

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

How much does it rain in Winchester in December?

In Winchester, Virginia, in December, during 11 rainfall days, 2.4" (61mm) of precipitation is typically accumulated.

How much does it snow in Winchester in December?

In Winchester, in December, snow falls for 4.5 days, with typically accumulated 3.15" (80mm) of snow.

What is the month with the shortest days in Winchester?

With an average of 9h and 30min of daylight, December has the shortest days of the year.

How many hours of daylight does Winchester have in December?

In December, the average day length in Winchester is 9h and 28min.

What time are sunrise and sunset in December in Winchester?

On the first day of December in Winchester, sunrise is at 7:13 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:00 pm EST.

How long on average sun shines in December in Winchester?

In Winchester, the average sunshine duration in December is 5.2h.

What are the months with the lowest UV index in Winchester?

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

How high is the UV index in December in Winchester?

The average daily maximum UV index in December in Winchester is 2. A UV Index value of 2, and less, symbolizes a low health threat from 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
Winchester, VA

Average temperature in December - Winchester, VA
  • Average high temperature in December: 43.2°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in December: 29.7°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).

Average pressure in December
Winchester, VA

Average pressure in December - Winchester, VA
  • Average pressure in December: 30.11"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
Winchester, VA

Average wind speed in December - Winchester, VA
  • Average wind speed in December: 6.1mph

The windiest month (with the highest average wind speed) is March (7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in December
Winchester, VA

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

The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is July (73%).

Average rainfall in December
Winchester, VA

Average rainfall in December - Winchester, VA
  • Average rainfall in December: 2.4"

The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (1.97").

Average rainfall days in December
Winchester, VA

Average rainfall days in December - Winchester, VA
  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is November (9.4 days).

Average snowfall in December
Winchester, VA

Average snowfall in December - Winchester, VA
  • Average snowfall in December: 3.15"

The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Winchester, VA

Average snowfall days in December - Winchester, VA
  • Average snowfall days in December: 4.5 days

The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Winchester, VA
  • Average daylight in December: 9h and 3min

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 30min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

Average sunshine days in December
Winchester, VA

Average sunshine days in December - Winchester, VA
  • Average sunshine days in December: 16.7 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (10 days).

Average UV index in December
Winchester, VA

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

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Winchester, VA

Average cloud cover in December - Winchester, VA
  • Average cloud cover in December: 46

The months with the most cloud cover are February, March and December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in December
Winchester, VA

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

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

Winchester, Virginia, USA

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