January weather forecastDundalk, MD

January

Weather in January

The year in Dundalk, Maryland starts off with a chilly atmosphere, enwrapped in 73% relative humidity. Frosty winds flow at 9.3mph (15km/h), carrying a sprinkling of snowfall with 0.31in falling, which is the highest in the year. As the days are short, the limited sunlight gives way to an array of atmospheric colors during sunrise and sunset. The weather tends towards cold, requiring warm clothing, especially during nights which see the lowest temperatures. Those venturing outside in January should prepare for wind chill factors that can significantly lower the perceived temperature.

Temperature

Dundalk experiences its lowest average temperatures in January, reaching a peak of 38.8°F (3.8°C) and a minimum of 27.7°F (-2.4°C).

Humidity

In January, the average relative humidity is 73%.

Rainfall

In Dundalk, in January, it is raining for 4.5 days, with typically 0.35" (9mm) of accumulated precipitation. In Dundalk, during the entire year, the rain falls for 84.4 days and collects up to 6.85" (174mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. January is the month with the most snowfall. Snow falls for 1.7 days and accumulates 0.31" (8mm) of snow.

Ocean temperature

In Dundalk, the average seawater temperature in January is 46°F (7.8°C).
Note: If planning to swim in 46°F (7.8°C) under 50°F (10°C), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 55.4°F (13°C) is not much warmer.

Daylight

The average length of the day in January is 9h and 47min.
On the first day of the month, sunrise is at 7:25 am and sunset at 4:53 pm. On the last day of January, sunrise is at 7:13 am and sunset at 5:24 pm EST.

Sunshine

In January, the average sunshine 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 estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 2 in January leads to these recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. 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. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.

Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The coldest time of the year is January, with temperatures averaging a high of 38.8°F (3.8°C) and a low of 27.7°F (-2.4°C).

The average high-temperature, in January, in Dundalk, is 38.8°F (3.8°C), while the average low-temperature is 27.7°F (-2.4°C).

The average relative humidity in January is 73%.

In Dundalk, in January, during 4.5 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

The month with the most snowfall is January, when snow falls for 1.7 days and typically aggregates up to 0.31" (8mm) of snow.

In Dundalk, in January, snow falls for 1.7 days, with typically accumulated 0.31" (8mm) of snow.

In January, the average ocean temperature is 46°F (7.8°C). Swimming in 46°F (7.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

The average day length in January in Dundalk, Maryland, is 9h and 47min.

In January, on the first day of the month, sunrise is at 7:25 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:24 pm EST.

In January, the average sunshine duration is 5.2h.

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

In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

45.1°F

38.8°F

42.1°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.4mph

10.1mph

10mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

1.7

2.4

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

23.8

24.7

20.6

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Dundalk, MD

Average high temperature in January: 38.8°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 January: 27.7°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).

Average pressure in January
Dundalk, MD

Average pressure in January: 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 January
Dundalk, MD

Average wind speed in January: 9.3mph

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).

Average humidity in January
Dundalk, MD

Average humidity in January: 73%

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

Average rainfall in January
Dundalk, MD

Average rainfall in January: 0.35"

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

Average rainfall days in January
Dundalk, MD

Average rainfall days in January: 4.5 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).

Average snowfall in January
Dundalk, MD

Average snowfall in January: 0.31"

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").

Average snowfall days in January
Dundalk, MD

Average snowfall days in January: 1.7 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).

Average sea temperature in January
Dundalk, MD

Average sea temperature in January: 46°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).

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

Average daylight in January: 9h and 48min

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 January: 5h and 12min

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).

Average sunshine days in January
Dundalk, MD

Average sunshine days in January: 24.7 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).

Average UV index in January
Dundalk, MD

Average UV index in January: 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).

Average cloud cover in January
Dundalk, MD

Average cloud cover in January: 43

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).

Average visibility in January
Dundalk, MD

Average visibility in January: 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).