December weather forecast
Dundalk, MD

Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
°Celsius°Fahrenheit
englishespañol中文
Share

Contents

Weather in December

Capping off the year, December showcases the full onset of winter in Dundalk, Maryland, with temperatures plummeting to an average minimum of 34.5°F (1.4°C). Fresh snowfall of about 0.16in creates a wintry scene, particularly around the festive Christmas period. As the days become shorter, Dundalk lights up with holiday fervor, enhancing the city's charm. Despite the chill, the festive season keeps the city lively and vibrant. Residents wrap up in warm layers, ringing in the New Year amidst the cool, crisp air.

Temperature

Dundalk's transition into December involves a gentle shift in temperature, receding from a cool 53.4°F (11.9°C) in November to a frosty 45.1°F (7.3°C). During December nights, Dundalk records an average temperature of 34.5°F (1.4°C).

Humidity

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

Rainfall

In Dundalk, in December, during 5.5 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, there are 84.4 rainfall days, and 6.85" (174mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In Dundalk, Maryland, during December, snow falls for 1 days and regularly aggregates up to 0.16" (4mm) of snow. In Dundalk, during the entire year, snow falls for 6.9 days and aggregates up to 0.71" (18mm) of snow.

Ocean temperature

In December, the average ocean temperature is 50.7°F (10.4°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

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 7:07 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:53 pm EST.

Sunshine

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

UV index

The 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 unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 2 in December translates into this advice:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
[Resources]

Frequently asked questions

What are December temperatures in Dundalk?

December temperatures in Dundalk, Maryland, vary between a high-temperature of 45.1°F (7.3°C) and a low-temperature of 34.5°F (1.4°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 89.6°F (32°C).

What is the average humidity in December in Dundalk?

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

How much does it rain in Dundalk in December?

In Dundalk, Maryland, in December, it is raining for 5.5 days, with typically 0.63" (16mm) of accumulated precipitation.

How many days does it snow in December in Dundalk?

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

What is the ocean temperature in December in Dundalk?

In Dundalk, Maryland, the average seawater temperature in December is 50.7°F (10.4°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the month with the shortest days in Dundalk?

The month with the shortest days is December, with an average of 9h and 30min of daylight.

How many hours of daylight does Dundalk have in December?

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

When are sunrise and sunset in December in Dundalk?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:43 pm. On the last day of the month, in Dundalk, Maryland, sunrise is at 7:25 am and sunset at 4:53 pm EST.

How many hours of sunshine does Dundalk have in December?

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

When is the lowest UV index in Dundalk?

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

What is the UV index intensity in December in Dundalk?

In December, the average daily maximum UV index in Dundalk is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
53.4°F 11.9°C
45.1°F 7.3°C
38.8°F 3.8°C
Average low temperature
41°F 5°C
34.5°F 1.4°C
27.7°F -2.4°C
Average pressure
30.13" 765mmHg
30.11" 765mmHg
30.1" 765mmHg
Average wind speed
8.5mph 13.7km/h
8.6mph 13.8km/h
9.3mph 15km/h
Average max. wind speed
9.2mph 14.8km/h
9.4mph 15.1km/h
10.1mph 16.3km/h
Average wind speed gusts
14mph 22.5km/h
14.2mph 22.9km/h
15.1mph 24.3km/h
Average humidity
73%
76%
73%
Average rainfall
0.47" 12mm
0.63" 16mm
0.35" 9mm
Average rainfall days
4.1
5.5
4.5
Average snowfall
0.04" 1mm
0.16" 4mm
0.31" 8mm
Average snowfall days
0.2
1
1.7
Average sea temperature
57.3°F 14.1°C
50.7°F 10.4°C
46°F 7.8°C
Average daylight
10h 0min
9h 3min
9h 5min
Average sunshine
5h 5min
5h 1min
5h 1min
Average sunshine days
24.5
23.8
24.7
Average UV index
3
2
2
Average cloud cover
36%
44%
43%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

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"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).

[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").
The 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).
The 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: 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 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

[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

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 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

The 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

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).

[Resources]

Dundalk, Maryland, USA

Weather forecast for today
Weather forecast for tomorrow
10 days weather forecast
Climate data
1January
2February
3March
4April
5May
6June
7July
8August
9September
10October
11November
12December

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location