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September Weather in Carbondale, United States

Last updated: June 24, 2025

In Carbondale, United States, the average temperature in September is 23°C (73°F), with a minimum of 9°C (48°F) and a maximum reaching 35°C (96°F). Expect about 75 mm (2.9 in) of precipitation over approximately 7 days, accompanied by an average humidity of 75%. Enjoy the diverse weather while planning your activities!

September Temperature in Carbondale

In September, in Carbondale, the average temperature is 23°C (73°F). Maximums can reach 35°C (96°F), while minimums can dip as low as 9°C (48°F). Be sure to pack layers to enjoy a comfortable trip amidst the warm days and cooler nights.

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

The chart illustrates September temperature patterns in Carbondale, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carbondale, September typically has an average temperature of 23°C (73°F), with highs reaching up to 35°C (96°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec353949576877807773614641
Data source: Temperature data for Carbondale 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 Carbondale

In Carbondale in September, the precipitation amount is 75 mm (2.9 in) over a span of 7 days.

September Precipitation Trends in Carbondale

The chart displays monthly precipitation patterns in Carbondale, 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 Carbondale, September typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec98115147145142979085751169186
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Carbondale

In Carbondale in September, humidity is 75%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making travel slightly uncomfortable yet invigorating as the air wraps around you, creating a sense of walking through a lush, tropical paradise.

September Average Humidity in Carbondale

This chart illustrates the average monthly humidity levels in Carbondale, 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 Carbondale is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%84%80%82%83%80%76%75%75%85%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Carbondale

In Carbondale 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 Carbondale.

Maximum UV Index Levels in Carbondale for September

The chart shows the monthly maximum UV Index (UVI) for Carbondale 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 Carbondale typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35710111110109753
Data source: Carbondale 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 Carbondale Compares to Other Months

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

This table compares monthly weather conditions in Carbondale, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)98 mm (3.9 inches)86%moderate
February Weather4°C (39°F)115 mm (4.5 inches)84%moderate
March Weather9°C (49°F)147 mm (5.8 inches)84%high
April Weather14°C (57°F)145 mm (5.7 inches)80%very high
May Weather20°C (69°F)142 mm (5.6 inches)82%extreme
June Weather25°C (77°F)97 mm (3.8 inches)83%extreme
July Weather27°C (81°F)90 mm (3.5 inches)79%very high
August Weather25°C (77°F)85 mm (3.4 inches)76%very high
September Weather23°C (73°F)75 mm (2.9 inches)75%very high
October Weather16°C (61°F)116 mm (4.5 inches)74%high
November Weather8°C (46°F)91 mm (3.6 inches)85%moderate
December Weather5°C (42°F)86 mm (3.4 inches)88%moderate

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