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September Weather in Evansville, United States

Last updated: June 24, 2025

In Evansville, United States, the average temperature in September hovers around 16°C (62°F). During this time, temperatures can vary widely, dipping to a chilly 0°C (33°F) at night and peaking at a warm 32°C (89°F) during the day. Expect 91 mm (3.6 in) of precipitation spread over 10 days, contributing to a humidity level of 82% that adds to the overall atmosphere of the season.

September Temperature in Evansville

In September in Evansville, the average temperature is 16°C (62°F), with maximums reaching up to 32°C (89°F) and minimums dropping as low as 0°C (33°F). This varied climate makes it essential for travelers to pack for both warm and cold conditions.

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

The chart illustrates September temperature patterns in Evansville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Evansville, September typically has an average temperature of 16°C (62°F), with highs reaching up to 32°C (89°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec121129405670736961453020
Data source: Temperature data for Evansville 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 Evansville

In Evansville in September, the precipitation amount totals 91 mm (3.6 in) over a span of 10 days.

September Precipitation Trends in Evansville

The chart displays monthly precipitation patterns in Evansville, 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 Evansville, September typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec19203565797811112191882541
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Evansville

In Evansville in September, humidity is 82%. With an average temperature of 16°C (62°F), this humidity feels like a blanket of warmth enveloping you, making traveling feel sticky and heavy as you navigate through the air.

September Average Humidity in Evansville

This chart illustrates the average monthly humidity levels in Evansville, 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 Evansville is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%89%81%82%76%81%82%83%82%82%87%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Evansville

In Evansville in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Evansville.

Maximum UV Index Levels in Evansville for September

The chart shows the monthly maximum UV Index (UVI) for Evansville 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 Evansville typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Evansville 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 Evansville Compares to Other Months

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

This table compares monthly weather conditions in Evansville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-11°C (12°F)19 mm (0.8 inches)85%low
February Weather-11°C (12°F)20 mm (0.8 inches)89%moderate
March Weather-2°C (29°F)35 mm (1.4 inches)81%moderate
April Weather4°C (40°F)65 mm (2.5 inches)82%high
May Weather14°C (57°F)79 mm (3.1 inches)76%very high
June Weather21°C (70°F)77 mm (3.1 inches)81%very high
July Weather23°C (73°F)111 mm (4.4 inches)82%very high
August Weather20°C (69°F)120 mm (4.7 inches)83%very high
September Weather16°C (62°F)91 mm (3.6 inches)82%high
October Weather7°C (45°F)88 mm (3.5 inches)82%moderate
November Weather-1°C (30°F)25 mm (1.0 inches)87%moderate
December Weather-7°C (20°F)41 mm (1.6 inches)84%low

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