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September Weather in Jeffersonville, United States

Last updated: June 24, 2025

In September, the average temperature in Jeffersonville, United States is a comfortable 22°C (71°F). However, temperatures can vary significantly, dipping as low as 7°C (45°F) and soaring to a maximum of 36°C (97°F). Prepare for some rain, as you'll encounter about 110 mm (4.3 in) of precipitation over 9 days. With an average humidity of 67%, it's a month that blends warmth with refreshing moisture.

September Temperature in Jeffersonville

In September in Jeffersonville, the average temperature is 22°C (71°F). Maximums can reach 36°C (97°F) and minimums can be as low as 7°C (45°F). This makes it a great time to explore Jeffersonville while enjoying pleasantly warm days and cool evenings.

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

The chart illustrates September temperature patterns in Jeffersonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jeffersonville, September typically has an average temperature of 22°C (71°F), with highs reaching up to 36°C (97°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec364148566773777571604541
Data source: Temperature data for Jeffersonville 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 Jeffersonville

In Jeffersonville in September, the precipitation amount is 110 mm (4.3 in) over the course of 9 days.

September Precipitation Trends in Jeffersonville

The chart displays monthly precipitation patterns in Jeffersonville, 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 Jeffersonville, September typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec9513912213112716510311711010878126
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Jeffersonville

In Jeffersonville in September, humidity is 67%. With an average temperature of 22°C (71°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet slightly uncomfortable, as the air hangs thick, reminding travelers to stay hydrated and seek shade during the midday sun.

September Average Humidity in Jeffersonville

This chart illustrates the average monthly humidity levels in Jeffersonville, 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 Jeffersonville is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%84%84%83%79%66%67%76%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Jeffersonville

In Jeffersonville 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 Jeffersonville.

Maximum UV Index Levels in Jeffersonville for September

The chart shows the monthly maximum UV Index (UVI) for Jeffersonville 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 Jeffersonville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101010109753
Data source: Jeffersonville 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 Jeffersonville Compares to Other Months

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

This table compares monthly weather conditions in Jeffersonville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)95 mm (3.7 inches)88%moderate
February Weather5°C (41°F)139 mm (5.5 inches)88%moderate
March Weather9°C (48°F)122 mm (4.8 inches)87%high
April Weather13°C (56°F)131 mm (5.2 inches)84%very high
May Weather19°C (67°F)127 mm (5.0 inches)84%very high
June Weather23°C (73°F)165 mm (6.5 inches)83%very high
July Weather25°C (78°F)103 mm (4.1 inches)79%very high
August Weather24°C (76°F)117 mm (4.6 inches)66%very high
September Weather22°C (71°F)110 mm (4.3 inches)67%very high
October Weather16°C (61°F)108 mm (4.2 inches)76%high
November Weather7°C (46°F)78 mm (3.1 inches)89%moderate
December Weather5°C (41°F)126 mm (5.0 inches)88%moderate

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