December weather forecastAberdeen, MD

December

Weather in December

Wrapping up the year, December invites the winter season in full swing over Aberdeen. It solidifies the onset of winter, creating a chilly environment fitting for the festive season. Temperatures dropping as low as 33.1°F (0.6°C) ensure a white Christmas for Aberdeen. As the year ends, December provides another opportunity to appreciate the city's resilience against a changing climate. Stepping into the winter shoes from November, December caps off the year with a snowy blanket.

Temperature

December's arrival signals a moderate reduction in the average high-temperature, easing from a fresh 53.1°F (11.7°C) in November to a chilly 44.4°F (6.9°C). Aberdeen reports a consistent average low-temperature of 33.1°F (0.6°C) throughout December nights.

Humidity

In Aberdeen, the average relative humidity in December is 77%.

Rainfall

In December, the rain falls for 9.5 days. Throughout December, 2.44" (62mm) of precipitation is accumulated. Throughout the year, there are 153 rainfall days, and 30.39" (772mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, May, November and December. In Aberdeen, during December, snow falls for 1.8 days and regularly aggregates up to 0.87" (22mm) of snow. In Aberdeen, during the entire year, snow falls for 12.7 days and aggregates up to 6.85" (174mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:06 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:24 am and sunset at 4:51 pm EST.

Sunshine

In Aberdeen, 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 estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.

Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature during December is 44.4°F (6.9°C) and the low-temperature is 33.1°F (0.6°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 89.6°F (32°C).

The average relative humidity in December is 77%.

In December, the rain falls for 9.5 days. Throughout December, 2.44" (62mm) of precipitation is accumulated.

In December, it is snowing for 1.8 days. Throughout December, 0.87" (22mm) of snow is accumulated.

With an average of 9h and 24min of daylight, December has the shortest days of the year.

In Aberdeen, the average day length in December is 9h and 26min.

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:51 pm EST.

In December, the average sunshine duration is 5.2h.

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

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

53.1°F

44.4°F

38.3°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.6mph

8.9mph

9.8mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

19.3

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Aberdeen, MD

Average high temperature in December: 44.4°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (38.3°F).

Average low temperature in December: 33.1°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

Average pressure in December
Aberdeen, MD

Average pressure in December: 30.1"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
Aberdeen, MD

Average wind speed in December: 8.3mph

The windiest months (with the highest average wind speed) are February and March (9mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in December
Aberdeen, MD

Average humidity in December: 77%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are March, April and November (74%).

Average rainfall in December
Aberdeen, MD

Average rainfall in December: 2.44"

The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (1.85").

Average rainfall days in December
Aberdeen, MD

Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (7.5 days).

Average snowfall in December
Aberdeen, MD

Average snowfall in December: 0.87"

The month with the highest snowfall is January (2.17").
The months with the least snowfall are April, June, July, August, September and October (0").

Average snowfall days in December
Aberdeen, MD

Average snowfall days in December: 1.8 days

The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are April, June, July, August, September and October (0 days).

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

Average daylight in December: 9h and 24min

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 24min).

Average sunshine in December: 5h and 12min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in December
Aberdeen, MD

Average sunshine days in December: 19.3 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in December
Aberdeen, 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
Aberdeen, MD

Average cloud cover in December: 45

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in December
Aberdeen, 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).