January Weather in Bethesda, United States

Last updated: June 24, 2025

In Bethesda, United States, the average temperature in January hovers around 0°C (32°F), with extremes ranging from a chilly -24°C (-11°F) to a pleasant 21°C (71°F). Expect about 93 mm (3.7 in) of precipitation over 10 days, coupled with an average humidity of 88%—perfect for those cozy indoor days!

January Temperature in Bethesda

In January in Bethesda, the average temperature is 0°C (32°F). The maximum can reach 21°C (71°F), while the minimum can plunge as low as -24°C (-11°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates January temperature patterns in Bethesda, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bethesda, 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 -24°C (-11°F).

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

January Precipitation in Bethesda

In Bethesda in January, the precipitation amount is 93 mm (3.7 in) over the course of 10 days.

January Precipitation Trends in Bethesda

The chart displays monthly precipitation patterns in Bethesda, 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 Bethesda, January typically receives around 93 mm (3.7 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Bethesda

In Bethesda 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 Bethesda

This chart illustrates the average monthly humidity levels in Bethesda, 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 Bethesda 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 Bethesda

In Bethesda 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 Bethesda, you can check the information here.

Maximum UV Index Levels in Bethesda for January

The chart shows the monthly maximum UV Index (UVI) for Bethesda 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 Bethesda typically reaches 3, which falls under the moderate exposure category.

Data source: Bethesda 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 Bethesda Compares to Other Months

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

This table compares monthly weather conditions in Bethesda, 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)	93 mm (3.7 inches)	88%	moderate
February Weather	2°C (36°F)	121 mm (4.8 inches)	88%	moderate
March Weather	6°C (43°F)	119 mm (4.7 inches)	88%	high
April Weather	11°C (52°F)	142 mm (5.6 inches)	86%	very high
May Weather	17°C (63°F)	141 mm (5.6 inches)	82%	very high
June Weather	21°C (71°F)	165 mm (6.5 inches)	84%	very high
July Weather	24°C (75°F)	133 mm (5.2 inches)	82%	very high
August Weather	23°C (73°F)	95 mm (3.7 inches)	73%	very high
September Weather	20°C (68°F)	114 mm (4.5 inches)	73%	very high
October Weather	14°C (58°F)	120 mm (4.7 inches)	81%	high
November Weather	6°C (43°F)	92 mm (3.6 inches)	89%	moderate
December Weather	3°C (37°F)	114 mm (4.5 inches)	86%	moderate