December weather forecast
Leithtown, VA

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Weather in December

December, the first month of the winter in Leithtown, is also a frosty month, with an average temperature varying between 30.9°F (-0.6°C) and 43.7°F (6.5°C).

Temperature

The transition into December subtly indicates a reduction in the average high-temperature, down to a chilly 43.7°F (6.5°C) from November's fresh 52.5°F (11.4°C). In Leithtown, the December nights cool down to an average low of 30.9°F (-0.6°C).

Humidity

October and December, with an average relative humidity of 78%, are the most humid months.

Rainfall

In December, the rain falls for 10.7 days. Throughout December, 2.6" (66mm) of precipitation is accumulated. In Leithtown, during the entire year, the rain falls for 162.2 days and collects up to 31.1" (790mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Leithtown, in December, snow falls for 3.8 days, with typically accumulated 2.68" (68mm) of snow. Throughout the year, there are 21.9 snowfall days, and 14.88" (378mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of December in Leithtown, sunrise is at 7:11 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:58 pm EST.

Sunshine

January and December, with an average of 5.1h of sunshine, are months with the least sunshine.

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 value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: In December, the maximum UV index of 2 suggests these recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during December?

An average high-temperature, in December, in Leithtown, is 43.7°F (6.5°C) and the average low-temperature is 30.9°F (-0.6°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 93.2°F (34°C).

What are the most humid months in Leithtown?

October and December, with an average relative humidity of 78%, are most humid months.

What is the average humidity in December in Leithtown?

In December, the average relative humidity is 78%.

How many days does it rain in December?

In Leithtown, Virginia, in December, during 10.7 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

How much does it snow in December?

In December, it is snowing for 3.8 days. Throughout December, 2.68" (68mm) of snow is accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

The average day length in December is 9h and 29min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:11 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:58 pm EST.

What are the months with the least sunshine in Leithtown?

January and December, with an average of 5.1h of sunshine, are months with the least sunshine.

How many hours of sunshine does Leithtown have in December?

In Leithtown, the average sunshine duration in December is 5.1h.

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 estimate of 2, and below, represents a minimal health vulnerability 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
Leithtown, VA

Average temperature in December - Leithtown, VA
  • Average high temperature in December: 43.7°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in December: 30.9°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in December
Leithtown, VA

Average pressure in December - Leithtown, 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
Leithtown, VA

Average wind speed in December - Leithtown, VA
  • Average wind speed in December: 6.5mph

The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).

Average humidity in December
Leithtown, VA

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

The months with the highest relative humidity are October and December (78%).
The month with the lowest relative humidity is July (73%).

Average rainfall in December
Leithtown, VA

Average rainfall in December - Leithtown, VA
  • Average rainfall in December: 2.6"

The wettest months (with the highest rainfall) are May and August (3.35").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in December
Leithtown, VA

Average rainfall days in December - Leithtown, VA
  • Average rainfall days in December: 10.7 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (10.1 days).

Average snowfall in December
Leithtown, VA

Average snowfall in December - Leithtown, VA
  • Average snowfall in December: 2.68"

The month with the highest snowfall is January (4.17").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Leithtown, VA

Average snowfall days in December - Leithtown, VA
  • Average snowfall days in December: 3.8 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Leithtown, 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 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).

Average sunshine days in December
Leithtown, VA

Average sunshine days in December - Leithtown, VA
  • Average sunshine days in December: 16.8 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.1 days).

Average UV index in December
Leithtown, VA

Average UV index in December - Leithtown, 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
Leithtown, VA

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

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in December
Leithtown, VA

Average visibility in December - Leithtown, VA
  • Average visibility in December: 5mi

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

Leithtown, Virginia, USA

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