May Weather in Germantown, United States

Last updated: June 24, 2025

In Germantown, United States, the average temperature in May hovers around 18°C (65°F). Expect a wide range with minimums dipping to 1°C (35°F) and maximums soaring up to 33°C (92°F). During this month, precipitation measures around 138 mm (5.4 in), spread over approximately 14 days, contributing to a high average humidity of 78%. Stay prepared for varying weather conditions!

May Temperature in Germantown

In May in Germantown, the average temperature is 18°C (65°F), with maximums that can reach 33°C (92°F) and minimums that can dip as low as 1°C (35°F). This makes it a great time to explore, so be sure to pack for both warm days and cooler evenings!

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

The chart illustrates May 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, May typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (92°F) and lows dropping to around 1°C (35°F).

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

May Precipitation in Germantown

In Germantown in May, the total precipitation amount is 138 mm (5.4 in) over a span of 14 days.

May Precipitation Trends in Germantown

The chart displays monthly precipitation patterns in Germantown, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Germantown, May typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 14 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Germantown

In Germantown in May, humidity is 78%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel quite muggy and potentially uncomfortable, as it can leave you feeling sticky and fatigued more quickly than usual.

May Average Humidity in Germantown

This chart illustrates the average monthly humidity levels in Germantown, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Germantown is approximately 78%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Germantown

In Germantown in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Germantown.

Maximum UV Index Levels in Germantown for May

The chart shows the monthly maximum UV Index (UVI) for Germantown in May, 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 May, the maximum UV index in Germantown typically reaches 10, which falls under the very high exposure category.

Data source: Germantown May 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 May 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 May’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 May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	59 mm (2.3 inches)	84%	moderate
February Weather	4°C (40°F)	96 mm (3.8 inches)	83%	moderate
March Weather	7°C (45°F)	89 mm (3.5 inches)	83%	high
April Weather	13°C (56°F)	96 mm (3.8 inches)	81%	very high
May Weather	18°C (65°F)	138 mm (5.4 inches)	78%	very high
June Weather	23°C (74°F)	129 mm (5.1 inches)	79%	very high
July Weather	26°C (80°F)	154 mm (6.1 inches)	74%	very high
August Weather	25°C (77°F)	134 mm (5.3 inches)	72%	very high
September Weather	21°C (71°F)	105 mm (4.2 inches)	75%	very high
October Weather	16°C (61°F)	104 mm (4.1 inches)	81%	high
November Weather	8°C (46°F)	88 mm (3.5 inches)	85%	moderate
December Weather	4°C (40°F)	95 mm (3.7 inches)	84%	moderate