December weather forecast
Dundalk, MD

Weather in December

December, the first month of the winter, in Dundalk, is also a frosty month, with average temperature fluctuating between 34.5°F (1.4°C) and 45.1°F (7.3°C).

Temperature

In Dundalk, the average high-temperature in December marginally drops, from a fresh 53.4°F (11.9°C) in November, to a chilly 45.1°F (7.3°C). In Dundalk, the average low-temperature is 34.5°F (1.4°C).

Humidity

In Dundalk, Maryland, the average relative humidity in December is 76%.

Rainfall

In Dundalk, Maryland, during December, the rain falls for 5.5 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Dundalk, during the entire year, the rain falls for 84.4 days and collects up to 6.85" (174mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In Dundalk, in December, snow falls for 1 days, with typically accumulated 0.16" (4mm) of snow. Throughout the year, in Dundalk, there are 6.9 snowfall days, and 0.71" (18mm) of snow is accumulated.

Ocean temperature

In Dundalk, Maryland, the average seawater temperature in December is 50.7°F (10.4°C).
Note: Swimming in 50.7°F (10.4°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

With an average of 9.5h of daylight, December has the shortest days of the year in Dundalk, Maryland.

Sunshine

In December, the average sunshine is 5.2h.

UV index

Months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from the exposure to the Sun's UV radiation for the average person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the average humidity in December in Dundalk?

In Dundalk, the average relative humidity in December is 76%.

How many days does it rain in December in Dundalk?

In December, the rain falls for 5.5 days. Throughout December, 0.63" (16mm) of precipitation is accumulated.

How much does it snow in Dundalk in December?

In Dundalk, in December, snow falls for 1 days, with typically accumulated 0.16" (4mm) of snow.

How cold is the water in December in Dundalk?

In December, the average ocean temperature in Dundalk is 50.7°F (10.4°C). Swimming in 50.7°F (10.4°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the month with the shortest days in Dundalk?

With an average of 9.5h of daylight, December has the shortest days of the year.

How many hours of daylight does Dundalk have in December?

In December, the average length of the day in Dundalk, Maryland, is 9.5h.

How long on average sun shines in December in Dundalk?

The average sunshine in December in Dundalk, Maryland, is 5.2h.

What are the months with the lowest UV index in Dundalk?

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

How high is the UV index in December in Dundalk?

The average daily maximum UV index in December in Dundalk, Maryland, is 2. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation.

Average temperature in December
Dundalk, MD

Average temperature in December - Dundalk, MD
  • Average high temperature in December: 45.1°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in December: 34.5°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

[Resources]

Average pressure in December
Dundalk, MD

Average pressure in December - Dundalk, MD
  • Average pressure in December: 30.11"

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

[Resources]

Average wind speed in December
Dundalk, MD

Average wind speed in December - Dundalk, MD
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

[Resources]

Average humidity in December
Dundalk, MD

Average humidity in December - Dundalk, MD
  • Average humidity in December: 76%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is April (72%).

[Resources]

Average rainfall in December
Dundalk, MD

Average rainfall in December - Dundalk, MD
  • Average rainfall in December: 0.63"

The wettest month (with the highest rainfall) is August (1.06").
The driest month (with the least rainfall) is September (0.24").

[Resources]

Average rainfall days in December
Dundalk, MD

Average rainfall days in December - Dundalk, MD
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is July (10.3 days).
The month with the least rainy days is November (4.1 days).

[Resources]

Average snowfall in December
Dundalk, MD

Average snowfall in December - Dundalk, MD
  • Average snowfall in December: 0.16"

The month with the highest snowfall is January (0.31").
Months with the least snowfall are April, May, June, July, August, September and October (0").

[Resources]

Average snowfall days in December
Dundalk, MD

Average snowfall days in December - Dundalk, MD
  • Average snowfall days in December: 1 days

The month with the highest number of snowfall days is February (2.4 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average sea temperature in December
Dundalk, MD

Average sea temperature in December - Dundalk, MD
  • Average sea temperature in December: 50.7°F

The best month for swimming (with the highest average sea temperature) is August (77.5°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).

[Resources]

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

Average daylight in December / Average sunshine in December - Dundalk, MD
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 5.2h

The month with the most sunshine is July (Average sunshine: 10.9h).
The month with the least sunshine is February (Average sunshine: 5h).

[Resources]

Average sunshine days in December
Dundalk, MD

Average sunshine days in December - Dundalk, MD
  • Average sunshine days in December: 23.8 days

The month with the most sunshine days is January (24.7 days).
The month with the least sunshine days is July (16.9 days).

[Resources]

Average UV index in December
Dundalk, MD

Average UV index in December - Dundalk, MD
  • Average UV index in December: 2

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).

[Resources]

Average cloud cover in December
Dundalk, MD

Average cloud cover in December - Dundalk, MD
  • Average cloud cover in December: 44

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

[Resources]

Average visibility in December
Dundalk, MD

Average visibility in December - Dundalk, MD
  • Average visibility in December: 6mi

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location