January Weather in Baltimore, United States

Last updated: June 24, 2025

In Baltimore, United States, the average temperature in January hovers around 0°C (32°F). Expect a minimum of -23°C (-10°F) and a maximum of 21°C (71°F), showcasing a diverse climate. Precipitation tends to accumulate to 90 mm (3.6 in) over about 10 days, while the average humidity lingers at a high 88%, making for a crisp yet moist atmosphere.

January Temperature in Baltimore

In January in Baltimore, the average temperature is 0°C (32°F), with a maximum reaching 21°C (71°F) and a minimum dropping as low as -23°C (-10°F). Travelers should be prepared for a wide range of temperatures, making layers essential for comfort during their visit.

January Weather in Baltimore: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Baltimore, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Baltimore, January typically has an average temperature of 0°C (32°F), with highs reaching up to 21°C (71°F) and lows dropping to around -23°C (-10°F).

Data source: Temperature data for Baltimore generated using information from the Copernicus Climate Change Service.

January Precipitation in Baltimore

In Baltimore in January, the precipitation amount is 90 mm (3.6 in) spread over the course of 10 days.

January Precipitation Trends in Baltimore

The chart displays monthly precipitation patterns in Baltimore, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Baltimore, January typically receives around 90 mm (3.6 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Baltimore

In Baltimore in January, humidity is 88%. With an average temperature of 0°C (32°F), this humidity feels like a chilly, damp blanket enveloping you, making travel uncomfortable as every breath seems to carry the weight of the cold moisture, turning each step into a struggle against the biting chill.

January Average Humidity in Baltimore

This chart illustrates the average monthly humidity levels in Baltimore, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Baltimore is approximately 88%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Baltimore

In Baltimore in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Baltimore, you can check the information here.

Maximum UV Index Levels in Baltimore for January

The chart shows the monthly maximum UV Index (UVI) for Baltimore in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Baltimore typically reaches 3, which falls under the moderate exposure category.

Data source: Baltimore January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Baltimore Compares to Other Months

Weather in Baltimore varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Baltimore, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Baltimore, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	90 mm (3.6 inches)	88%	moderate
February Weather	2°C (36°F)	123 mm (4.8 inches)	88%	moderate
March Weather	6°C (43°F)	122 mm (4.8 inches)	87%	high
April Weather	11°C (53°F)	134 mm (5.3 inches)	85%	very high
May Weather	18°C (64°F)	135 mm (5.3 inches)	81%	very high
June Weather	22°C (72°F)	159 mm (6.3 inches)	82%	very high
July Weather	24°C (76°F)	128 mm (5.0 inches)	81%	very high
August Weather	23°C (74°F)	96 mm (3.8 inches)	73%	very high
September Weather	20°C (69°F)	96 mm (3.8 inches)	73%	very high
October Weather	14°C (58°F)	108 mm (4.3 inches)	78%	high
November Weather	6°C (43°F)	103 mm (4.1 inches)	89%	moderate
December Weather	3°C (37°F)	111 mm (4.4 inches)	87%	moderate