December weather forecast
Swan Villas, MD

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Weather in December

December, the first month of the winter in Swan Villas, is also a frosty month, with temperature in the range of an average high of 46.2°F (7.9°C) and an average low of 36.5°F (2.5°C).

Temperature

Swan Villas's progression into December involves a gentle drop in the average high-temperature, from a cool 54.5°F (12.5°C) in November to a chilly 46.2°F (7.9°C). Swan Villas experiences a mean low-temperature of 36.5°F (2.5°C) during December.

Humidity

The average relative humidity in December in Swan Villas is 76%.

Rainfall

In Swan Villas, during December, the rain falls for 11.1 days and regularly aggregates up to 2.91" (74mm) of precipitation. In Swan Villas, during the entire year, the rain falls for 157 days and collects up to 32.91" (836mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Swan Villas, in December, snow falls for 1.6 days, with typically accumulated 0.67" (17mm) of snow. Throughout the year, there are 9.8 snowfall days, and 3.82" (97mm) 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 7:04 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:53 pm EST.

Sunshine

In Swan Villas, the average sunshine in December is 5.3h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in December?

An average high-temperature, in December, in Swan Villas, is 46.2°F (7.9°C) and the average low-temperature is 36.5°F (2.5°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is evaluated at 89.6°F (32°C).

What is the average humidity in December?

In December, the average relative humidity is 76%.

How much does it rain in December?

In Swan Villas, in December, it is raining for 11.1 days, with typically 2.91" (74mm) of accumulated precipitation.

How much does it snow in December?

In Swan Villas, in December, snow falls for 1.6 days, with typically accumulated 0.67" (17mm) of snow.

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?

In Swan Villas, the average day length in December is 9h and 30min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:53 pm EST.

How many hours of sunshine does Swan Villas have in December?

In Swan Villas, the average sunshine duration in December is 5.3h.

What is the month with the lowest UV index in Swan Villas?

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

What is the UV index reading 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
Swan Villas, MD

Average temperature in December - Swan Villas, MD
  • Average high temperature in December: 46.2°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (40.5°F).

  • Average low temperature in December: 36.5°F

The month with the highest average low temperature is July (71.8°F).
The coldest month (with the lowest average low temperature) is January (30°F).

Average pressure in December
Swan Villas, MD

Average pressure in December - Swan Villas, MD
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Swan Villas, MD

Average wind speed in December - Swan Villas, MD
  • Average wind speed in December: 9.2mph

The windiest months (with the highest average wind speed) are February and March (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in December
Swan Villas, MD

Average humidity in December - Swan Villas, MD
  • Average humidity in December: 76%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and November (73%).

Average rainfall in December
Swan Villas, MD

Average rainfall in December - Swan Villas, MD
  • Average rainfall in December: 2.91"

The wettest month (with the highest rainfall) is August (4.17").
The driest month (with the least rainfall) is January (1.93").

Average rainfall days in December
Swan Villas, MD

Average rainfall days in December - Swan Villas, MD
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is May (17.2 days).
The months with the least rainy days are January and November (8.8 days).

Average snowfall in December
Swan Villas, MD

Average snowfall in December - Swan Villas, MD
  • Average snowfall in December: 0.67"

The month with the highest snowfall is March (1.22").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Swan Villas, MD

Average snowfall days in December - Swan Villas, MD
  • Average snowfall days in December: 1.6 days

The month with the highest number of snowfall days is January (3.2 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
Swan Villas, MD

Average daylight in December / Average sunshine in December - Swan Villas, MD
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).

Average sunshine days in December
Swan Villas, MD

Average sunshine days in December - Swan Villas, MD
  • Average sunshine days in December: 17.7 days

The month with the most sunshine days is November (19.7 days).
The months with the least sunshine days are May and August (11.8 days).

Average UV index in December
Swan Villas, MD

Average UV index in December - Swan Villas, MD
  • 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 and December (UV index 2).

Average cloud cover in December
Swan Villas, MD

Average cloud cover in December - Swan Villas, MD
  • Average cloud cover in December: 43

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in December
Swan Villas, MD

Average visibility in December - Swan Villas, MD
  • Average visibility in December: 6mi

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

Swan Villas, Maryland, USA

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