December weather forecast
Damascus, MD

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Weather in December

The first month of the winter, December, is still a chilly month in Damascus, Maryland, with temperature in the range of an average high of 43.5°F (6.4°C) and an average low of 31.1°F (-0.5°C).

Temperature

With the commencement of December, Damascus records a moderate temperature decline, with the average high easing from November's fresh 52.3°F (11.3°C) to a chilly 43.5°F (6.4°C). Throughout December, Damascus witnesses a consistent average low-temperature of 31.1°F (-0.5°C).

Humidity

In December, the average relative humidity is 78%.

Rainfall

In Damascus, in December, it is raining for 10.4 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 158.7 rainfall days, and 30.91" (785mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Damascus, in December, snow falls for 3.5 days, with typically accumulated 2.01" (51mm) of snow. In Damascus, during the entire year, snow falls for 21.3 days and aggregates up to 13.31" (338mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 7:10 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:55 pm EST.

Sunshine

In Damascus, the average sunshine in December is 5.1h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: During December, 2 as the daily maximum UV index converts into the following advice:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Updated: Jun 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

December temperatures vary between a high-temperature of 43.5°F (6.4°C) and a low-temperature of 31.1°F (-0.5°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is estimated at 89.6°F (32°C).

What is the average humidity in December?

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

How much does it rain in December?

In December, the rain falls for 10.4 days. Throughout December, 2.24" (57mm) of precipitation is accumulated.

How many days does it snow in December?

In Damascus, Maryland, in December, during 3.5 snowfall days, 2.01" (51mm) of snow is typically 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?

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

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:10 am and sunset at 4:46 pm. On the last day of the month, in Damascus, sunrise is at 7:28 am and sunset at 4:55 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 5.1h.

What are the months 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 December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to 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
Damascus, MD

Average temperature in December - Damascus, MD
  • Average high temperature in December: 43.5°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in December: 31.1°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in December
Damascus, MD

Average pressure in December - Damascus, MD
  • 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
Damascus, MD

Average wind speed in December - Damascus, MD
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Damascus, MD

Average humidity in December - Damascus, MD
  • Average humidity in December: 78%

The months with the highest relative humidity are May and October (79%).
The months with the lowest relative humidity are April and July (74%).

Average rainfall in December
Damascus, MD

Average rainfall in December - Damascus, MD
  • Average rainfall in December: 2.24"

The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.93").

Average rainfall days in December
Damascus, MD

Average rainfall days in December - Damascus, MD
  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Damascus, MD

Average snowfall in December - Damascus, MD
  • Average snowfall in December: 2.01"

The month with the highest snowfall is March (4.09").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Damascus, MD

Average snowfall days in December - Damascus, MD
  • Average snowfall days in December: 3.5 days

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Damascus, MD

Average daylight in December / Average sunshine in December - Damascus, MD
  • 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 month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in December
Damascus, MD

Average sunshine days in December - Damascus, MD
  • Average sunshine days in December: 17.6 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in December
Damascus, MD

Average UV index in December - Damascus, 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, February, November and December (UV index 2).

Average cloud cover in December
Damascus, MD

Average cloud cover in December - Damascus, MD
  • Average cloud cover in December: 45

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
Damascus, MD

Average visibility in December - Damascus, MD
  • 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).

Damascus, Maryland, USA

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