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September Weather in Corydon, United States

Last updated: June 24, 2025

In Corydon, United States, the average temperature in September hovers around 20°C (69°F), offering a pleasant climate for outdoor activities. Expect a range with a minimum of 6°C (44°F) and a maximum that can soar to 33°C (91°F). However, be prepared for some wet days, as 125 mm (4.9 in) of precipitation may fall over 9 days. With an average humidity of 73%, it's wise to stay hydrated and embrace the local scenery!

September Temperature in Corydon

In September in Corydon, the average temperature is 20°C (69°F), with maximums reaching up to 33°C (91°F) and minimums dropping as low as 6°C (44°F). This variability makes it an ideal time for travelers to enjoy a range of outdoor activities while also preparing for cooler evenings.

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

The chart illustrates September temperature patterns in Corydon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Corydon, September typically has an average temperature of 20°C (69°F), with highs reaching up to 33°C (91°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec242741506375787569544033
Data source: Temperature data for Corydon 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 Corydon

In Corydon in September, the total precipitation amount is 125 mm (4.9 in) recorded over a span of 9 days.

September Precipitation Trends in Corydon

The chart displays monthly precipitation patterns in Corydon, 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 Corydon, September typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec46461017414712194801251435535
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Corydon

In Corydon in September humidity is 73%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, making travel slightly sticky but ultimately comfortable as long as you stay hydrated and take breaks in the shade.

September Average Humidity in Corydon

This chart illustrates the average monthly humidity levels in Corydon, 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 Corydon is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%77%78%77%81%81%77%73%75%85%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Corydon

In Corydon 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 Corydon.

Maximum UV Index Levels in Corydon for September

The chart shows the monthly maximum UV Index (UVI) for Corydon 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 Corydon typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Corydon 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 Corydon Compares to Other Months

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

This table compares monthly weather conditions in Corydon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)46 mm (1.8 inches)78%moderate
February Weather-3°C (27°F)46 mm (1.8 inches)80%moderate
March Weather5°C (42°F)101 mm (4.0 inches)77%high
April Weather10°C (51°F)74 mm (2.9 inches)77%very high
May Weather17°C (64°F)147 mm (5.8 inches)77%very high
June Weather24°C (75°F)121 mm (4.8 inches)81%extreme
July Weather25°C (78°F)94 mm (3.7 inches)81%very high
August Weather24°C (75°F)80 mm (3.2 inches)77%very high
September Weather20°C (69°F)125 mm (4.9 inches)73%very high
October Weather12°C (54°F)143 mm (5.6 inches)75%high
November Weather4°C (40°F)55 mm (2.2 inches)85%moderate
December Weather0°C (33°F)35 mm (1.4 inches)83%moderate

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