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September Weather in Shelbyville, United States

Last updated: June 24, 2025

In September, the average temperature in Shelbyville, United States is a pleasant 22°C (71°F). However, be prepared for a temperature range that can dip as low as 5°C (42°F) and soar to a sizzling 35°C (96°F). With precipitation totaling 66 mm (2.6 in) over approximately 7 days, you might encounter some wet weather, but the average humidity remains high at 76%.

September Temperature in Shelbyville

In September in Shelbyville, the average temperature is 22°C (71°F). Maximums can reach 35°C (96°F), and minimums can be as low as 5°C (42°F). This climate makes Shelbyville a perfect destination for travelers seeking a mix of warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Shelbyville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shelbyville, September typically has an average temperature of 22°C (71°F), with highs reaching up to 35°C (96°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec293244536676797571574236
Data source: Temperature data for Shelbyville 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 Shelbyville

In Shelbyville in September, the precipitation amount is 66 mm (2.6 in) over a period of 7 days.

September Precipitation Trends in Shelbyville

The chart displays monthly precipitation patterns in Shelbyville, 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 Shelbyville, September typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec615711510518511785100661095341
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Shelbyville

In Shelbyville in September, humidity is 76%. With an average temperature of 22°C (71°F), this humidity feels like traveling through a warm, dense mist that clings to your skin, making every step feel heavier and the air seem thicker, which can be quite draining for outdoor activities.

September Average Humidity in Shelbyville

This chart illustrates the average monthly humidity levels in Shelbyville, 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 Shelbyville is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Shelbyville

In Shelbyville 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 Shelbyville.

Maximum UV Index Levels in Shelbyville for September

The chart shows the monthly maximum UV Index (UVI) for Shelbyville 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 Shelbyville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
Data source: Shelbyville 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 Shelbyville Compares to Other Months

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

This table compares monthly weather conditions in Shelbyville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)61 mm (2.4 inches)82%moderate
February Weather0°C (32°F)57 mm (2.2 inches)80%moderate
March Weather7°C (45°F)115 mm (4.5 inches)80%high
April Weather12°C (53°F)105 mm (4.1 inches)80%very high
May Weather19°C (66°F)185 mm (7.3 inches)82%very high
June Weather24°C (76°F)117 mm (4.6 inches)83%extreme
July Weather26°C (79°F)85 mm (3.4 inches)81%extreme
August Weather24°C (76°F)100 mm (3.9 inches)80%very high
September Weather22°C (71°F)66 mm (2.6 inches)76%very high
October Weather14°C (57°F)109 mm (4.3 inches)76%high
November Weather6°C (43°F)53 mm (2.1 inches)85%moderate
December Weather2°C (37°F)41 mm (1.6 inches)86%moderate

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