September Weather in Stuttgart, United States

Last updated: June 24, 2025

In September, the average temperature in Stuttgart, United States is a pleasant 25°C (77°F). Expect a range from a cool 10°C (51°F) to a warm 37°C (99°F). During this period, precipitation averages 88 mm (3.5 in) spread over about 7 days, and the air maintains an average humidity level of 71%.

September Temperature in Stuttgart

In September in Stuttgart, the average temperature is 25°C (77°F). Maximum temperatures can reach up to 37°C (99°F), while the minimum can drop as low as 10°C (51°F). Overall, it's a great time to visit Stuttgart if you enjoy warm weather with a refreshing cooler breeze in the evenings.

September Weather in Stuttgart: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Stuttgart, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stuttgart, September typically has an average temperature of 25°C (77°F), with highs reaching up to 37°C (99°F) and lows dropping to around 10°C (51°F).

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

September Precipitation in Stuttgart

In Stuttgart in September, the precipitation amount is 88 mm (3.5 in) over a span of 7 days.

September Precipitation Trends in Stuttgart

The chart displays monthly precipitation patterns in Stuttgart, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Stuttgart, September typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 7 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Stuttgart

In Stuttgart in September humidity is 71%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace, making outdoor exploration a bit sticky but still enjoyable, especially if you take breaks in shaded areas and stay hydrated.

September Average Humidity in Stuttgart

This chart illustrates the average monthly humidity levels in Stuttgart, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Stuttgart is approximately 71%, offering insight into how humid the weather typically is during this month.

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

September UV Index in Stuttgart

In Stuttgart in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Stuttgart.

Maximum UV Index Levels in Stuttgart for September

The chart shows the monthly maximum UV Index (UVI) for Stuttgart in September, 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 September, the maximum UV index in Stuttgart typically reaches 9, which falls under the very high exposure category.

Data source: Stuttgart September 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 September Weather in Stuttgart Compares to Other Months

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

This table compares monthly weather conditions in Stuttgart, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (44°F)	109 mm (4.3 inches)	84%	moderate
February Weather	8°C (47°F)	167 mm (6.6 inches)	83%	high
March Weather	14°C (57°F)	169 mm (6.6 inches)	81%	very high
April Weather	17°C (62°F)	150 mm (5.9 inches)	81%	very high
May Weather	23°C (73°F)	153 mm (6.0 inches)	83%	extreme
June Weather	26°C (79°F)	106 mm (4.2 inches)	83%	extreme
July Weather	28°C (82°F)	105 mm (4.1 inches)	81%	extreme
August Weather	27°C (81°F)	115 mm (4.5 inches)	74%	very high
September Weather	25°C (77°F)	88 mm (3.5 inches)	71%	very high
October Weather	18°C (66°F)	132 mm (5.2 inches)	76%	high
November Weather	11°C (52°F)	77 mm (3.0 inches)	84%	high
December Weather	9°C (48°F)	158 mm (6.2 inches)	88%	moderate