September Weather in Minneapolis, United States

Last updated: June 24, 2025

In September, the average temperature in Minneapolis, United States hovers around 23°C (73°F). Expect a minimum of 5°C (42°F) and a maximum of 38°C (101°F), offering a wide range of experiences. With an average precipitation of 58 mm (2.3 in) spread over 6 days, it's wise to be prepared for some rain. The average humidity stands at a comfortable 73%, adding to the region's pleasant atmosphere.

September Temperature in Minneapolis

In September in Minneapolis, the average temperature is 23°C (73°F), with maximums potentially reaching 38°C (101°F) and minimums dropping as low as 5°C (42°F). This diverse range of temperatures makes it essential for travelers to pack accordingly to enjoy their stay comfortably.

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

The chart illustrates September temperature patterns in Minneapolis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Minneapolis, September typically has an average temperature of 23°C (73°F), with highs reaching up to 38°C (101°F) and lows dropping to around 5°C (42°F).

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

September Precipitation in Minneapolis

In Minneapolis in September, the precipitation amount is 58 mm (2.3 in) over the course of 6 days.

September Precipitation Trends in Minneapolis

The chart displays monthly precipitation patterns in Minneapolis, 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 Minneapolis, September typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 6 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 Minneapolis

In Minneapolis in September humidity is 73%. With an average temperature of 23°C (73°F), this humidity feels like a thick blanket wrapping around you, making travel feel stifling and sticky, as every step seems to linger in the moisture-laden air.

September Average Humidity in Minneapolis

This chart illustrates the average monthly humidity levels in Minneapolis, 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 Minneapolis is approximately 73%, 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 Minneapolis

In Minneapolis 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 Minneapolis.

Maximum UV Index Levels in Minneapolis for September

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

Data source: Minneapolis 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 Minneapolis Compares to Other Months

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

This table compares monthly weather conditions in Minneapolis, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	27 mm (1.1 inches)	74%	moderate
February Weather	0°C (33°F)	26 mm (1.0 inches)	78%	moderate
March Weather	8°C (46°F)	67 mm (2.6 inches)	67%	high
April Weather	13°C (55°F)	62 mm (2.4 inches)	70%	very high
May Weather	19°C (66°F)	196 mm (7.7 inches)	82%	very high
June Weather	26°C (79°F)	67 mm (2.6 inches)	81%	extreme
July Weather	27°C (82°F)	82 mm (3.2 inches)	80%	extreme
August Weather	26°C (78°F)	102 mm (4.0 inches)	80%	very high
September Weather	23°C (73°F)	58 mm (2.3 inches)	73%	very high
October Weather	14°C (57°F)	96 mm (3.8 inches)	71%	high
November Weather	7°C (45°F)	27 mm (1.1 inches)	79%	moderate
December Weather	3°C (37°F)	25 mm (1.0 inches)	83%	moderate