December weather forecast
Solomons, MD

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Weather in December

Finally, December concludes the weather cycle in Solomons, Maryland. The sharp dip in temperature and the return of snowfall from November’s 0.24" (6mm) to December’s 0.94" (24mm) prove December as the authentic start of winter. With January just around the corner, Solomons residents can anticipate consistent snowfall and colder temperatures. The re-emergence of colder weather in December marks the full circle of weather transitioning and transforms the landscape into a winter wonderland.

Temperature

The arrival of December correlates with a minor temperature reduction, down from November's cool 55.2°F (12.9°C) to a frosty 47.1°F (8.4°C). An average low-temperature of 37.8°F (3.2°C) is recorded in the month of December.

Humidity

The average relative humidity in December is 76%.

Rainfall

In Solomons, in December, it is raining for 10.5 days, with typically 2.24" (57mm) of accumulated precipitation. In Solomons, during the entire year, the rain falls for 160.6 days and collects up to 34.49" (876mm) of precipitation.

Snowfall

Months with snowfall in Solomons are January through April, November and December. In Solomons, in December, during 1.7 snowfall days, 0.94" (24mm) of snow is typically accumulated. Throughout the year, there are 9.6 snowfall days, and 5.28" (134mm) of snow is accumulated.

Ocean temperature

In Solomons, the average seawater temperature in December is 52.5°F (11.4°C).
Note: It is risky to swim in 52.5°F (11.4°C). Temperatures beneath 50°F (10°C) induce rapid cold shock and hyperventilation.

Daylight

December has the shortest days of the year, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:55 pm EST.

Sunshine

In Solomons, Maryland, the average sunshine in December is 5.2h.

UV index

January 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 minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Solomons in December?

An average high-temperature, in December, in Solomons, is 47.1°F (8.4°C) and the average low-temperature is 37.8°F (3.2°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in August is computed to be 89.6°F (32°C).

What is the average humidity in December?

The average relative humidity in December is 76%.

How many days does it rain in December?

In Solomons, during December, the rain falls for 10.5 days and regularly aggregates up to 2.24" (57mm) of precipitation.

How many days does it snow in December?

In Solomons, during December, snow falls for 1.7 days and regularly aggregates up to 0.94" (24mm) of snow.

How cold is the water in December?

In Solomons, in December, the average water temperature is 52.5°F (11.4°C). Swimming in 52.5°F (11.4°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 36min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 33min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:55 pm EST.

How long on average sun shines in December?

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

When is the lowest UV index?

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

What is the UV index intensity in December?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe 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
Solomons, MD

Average temperature in December - Solomons, MD
  • Average high temperature in December: 47.1°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (41.7°F).

  • Average low temperature in December: 37.8°F

The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

Average pressure in December
Solomons, MD

Average pressure in December - Solomons, 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 (29.95"Hg).

Average wind speed in December
Solomons, MD

Average wind speed in December - Solomons, MD
  • Average wind speed in December: 9mph

The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

Average humidity in December
Solomons, MD

Average humidity in December - Solomons, 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, March and November (73%).

Average rainfall in December
Solomons, MD

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

The wettest month (with the highest rainfall) is July (4.53").
The driest month (with the least rainfall) is January (1.93").

Average rainfall days in December
Solomons, MD

Average rainfall days in December - Solomons, MD
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in December
Solomons, MD

Average snowfall in December - Solomons, MD
  • Average snowfall in December: 0.94"

The month with the highest snowfall is January (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Solomons, MD

Average snowfall days in December - Solomons, MD
  • Average snowfall days in December: 1.7 days

The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in December
Solomons, MD

Average sea temperature in December - Solomons, MD
  • Average sea temperature in December: 52.6°F

The best month for swimming (with the highest average sea temperature) is August (78.5°F).
The coldest month (with the lowest average sea temperature) is February (45.6°F).

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

Average daylight in December / Average sunshine in December - Solomons, MD
  • Average daylight in December: 9h and 4min

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 36min).

  • 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 February (Average sunshine: 5h and 6min).

Average sunshine days in December
Solomons, MD

Average sunshine days in December - Solomons, MD
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is August (10.7 days).

Average UV index in December
Solomons, MD

Average UV index in December - Solomons, 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
Solomons, MD

Average cloud cover in December - Solomons, MD
  • Average cloud cover in December: 43

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in December
Solomons, MD

Average visibility in December - Solomons, 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).

Solomons, Maryland, USA

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