January Weather in Germantown, United States

Last updated: June 24, 2025

In Germantown, United States, the average temperature in January hovers around 1°C (33°F). While daily variations can be significant, expect minimums of -20°C (-4°F) and highs reaching up to 20°C (69°F). Rainfall is not uncommon, with an average precipitation amount of 84 mm (3.3 in) spread over 8 days. Additionally, the air is quite humid, with an average humidity level of 84%, creating a chilly and damp atmosphere.

January Temperature in Germantown

In January, in Germantown, the average temperature is 1°C (33°F). The maximum can reach 20°C (69°F), and the minimum can be as low as -20°C (-4°F). Travelers should be prepared for a wide range of temperatures, bringing both warm and light clothing to accommodate the chilly nights and potentially mild days.

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

The chart illustrates January temperature patterns in Germantown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Germantown, January typically has an average temperature of 1°C (33°F), with highs reaching up to 20°C (69°F) and lows dropping to around -20°C (-4°F).

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

January Precipitation in Germantown

In Germantown in January, the precipitation amount is 84 mm (3.3 in) spread over 8 days.

January Precipitation Trends in Germantown

The chart displays monthly precipitation patterns in Germantown, 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 Germantown, January typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 8 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 Germantown

In Germantown in January humidity is 84%. With an average temperature of 1°C (33°F), this humidity feels like an icy blanket, making travel uncomfortable and breathless as the frigid air clings to your skin and dampens your clothes.

January Average Humidity in Germantown

This chart illustrates the average monthly humidity levels in Germantown, 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 Germantown is approximately 84%, 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 Germantown

In Germantown 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 Germantown, you can check the information here.

Maximum UV Index Levels in Germantown for January

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

Data source: Germantown 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 Germantown Compares to Other Months

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

This table compares monthly weather conditions in Germantown, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (33°F)	84 mm (3.3 inches)	84%	moderate
February Weather	2°C (37°F)	92 mm (3.6 inches)	82%	moderate
March Weather	9°C (48°F)	142 mm (5.6 inches)	84%	high
April Weather	13°C (56°F)	136 mm (5.4 inches)	83%	very high
May Weather	20°C (68°F)	175 mm (6.9 inches)	80%	extreme
June Weather	25°C (77°F)	104 mm (4.1 inches)	83%	extreme
July Weather	27°C (80°F)	94 mm (3.7 inches)	82%	very high
August Weather	25°C (77°F)	110 mm (4.3 inches)	82%	very high
September Weather	23°C (73°F)	61 mm (2.4 inches)	79%	very high
October Weather	15°C (60°F)	116 mm (4.6 inches)	79%	high
November Weather	7°C (45°F)	82 mm (3.2 inches)	88%	moderate
December Weather	4°C (40°F)	76 mm (3.0 inches)	87%	moderate