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September Weather in Hennepin, United States

Last updated: June 24, 2025

In Hennepin, United States, the average temperature in September hovers around 20°C (69°F). Daily highs can reach a scorching 35°C (95°F), while chilly nights can drop to a brisk 4°C (40°F). Expect about 83 mm (3.3 in) of rain spread over 8 days, contributing to an average humidity of 80%. Whether you're exploring sunny skies or cozying up during a rain shower, September offers a dynamic climate that captivates all!

September Temperature in Hennepin

In September in Hennepin, the average temperature is 20°C (69°F). Maximums can reach 35°C (95°F), and minimums can be as low as 4°C (40°F). This weather makes Hennepin an ideal destination for travelers seeking both warmth and cool, refreshing evenings.

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

The chart illustrates September temperature patterns in Hennepin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hennepin, September typically has an average temperature of 20°C (69°F), with highs reaching up to 35°C (95°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec252841506373767469553933
Data source: Temperature data for Hennepin generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Hennepin

In Hennepin in September, the precipitation amount reaches 83 mm (3.3 in) over the course of 8 days.

September Precipitation Trends in Hennepin

The chart displays monthly precipitation patterns in Hennepin, 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 Hennepin, September typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec58649311416015210576841345451
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hennepin

In Hennepin in September, humidity is 80%. With an average temperature of 20°C (69°F), this humidity feels like a warm blanket enveloping you, making every step slightly more challenging as you navigate the air that clings to your skin, often leaving you longing for a cool breeze while exploring the sights.

September Average Humidity in Hennepin

This chart illustrates the average monthly humidity levels in Hennepin, 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 Hennepin is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hennepin

In Hennepin in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Hennepin.

Maximum UV Index Levels in Hennepin for September

The chart shows the monthly maximum UV Index (UVI) for Hennepin 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 Hennepin typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689111098642
Data source: Hennepin 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 Hennepin Compares to Other Months

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

This table compares monthly weather conditions in Hennepin, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)58 mm (2.3 inches)82%moderate
February Weather-2°C (28°F)64 mm (2.5 inches)83%moderate
March Weather5°C (41°F)93 mm (3.7 inches)84%high
April Weather10°C (50°F)114 mm (4.5 inches)85%very high
May Weather17°C (63°F)160 mm (6.3 inches)79%very high
June Weather23°C (74°F)152 mm (6.0 inches)82%extreme
July Weather25°C (76°F)105 mm (4.1 inches)80%very high
August Weather23°C (74°F)76 mm (3.0 inches)81%very high
September Weather20°C (69°F)83 mm (3.3 inches)80%very high
October Weather13°C (55°F)134 mm (5.3 inches)82%high
November Weather4°C (40°F)54 mm (2.1 inches)88%moderate
December Weather1°C (33°F)51 mm (2.0 inches)84%low

Compare Hennepin's Climate with Cities Worldwide