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September Weather in Butler, United States

Last updated: June 24, 2025

In September, the average temperature in Butler, United States hovers around 21°C (71°F), with a minimum dip to 7°C (45°F) and a sizzling maximum of 35°C (96°F). Expect about 110 mm (4.3 in) of rain spread across 8 days, and a cozy average humidity level of 73%. Whether you're enjoying the sun or dodging the rain, be prepared for the diverse weather!

September Temperature in Butler

In September in Butler, the average temperature is 21°C (71°F), with maximums reaching up to 35°C (96°F) and minimums dropping as low as 7°C (45°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities while experiencing comfortable weather conditions.

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

The chart illustrates September temperature patterns in Butler, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Butler, September typically has an average temperature of 21°C (71°F), with highs reaching up to 35°C (96°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec343846556673777570594439
Data source: Temperature data for Butler 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 Butler

In Butler in September, the precipitation amount is 110 mm (4.3 in) over a period of 8 days.

September Precipitation Trends in Butler

The chart displays monthly precipitation patterns in Butler, 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 Butler, September typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec851251301371321721259311010391121
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Butler

In Butler in September humidity is 73%. With an average temperature of 21°C (71°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities a bit uncomfortable, but with proper hydration and breaks in the shade, it’s still manageable for traveling.

September Average Humidity in Butler

This chart illustrates the average monthly humidity levels in Butler, 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 Butler is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Butler

In Butler 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 Butler.

Maximum UV Index Levels in Butler for September

The chart shows the monthly maximum UV Index (UVI) for Butler 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 Butler typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098643
Data source: Butler 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 Butler Compares to Other Months

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

This table compares monthly weather conditions in Butler, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)85 mm (3.4 inches)88%moderate
February Weather4°C (39°F)125 mm (4.9 inches)88%moderate
March Weather8°C (46°F)130 mm (5.1 inches)87%high
April Weather13°C (55°F)137 mm (5.4 inches)85%very high
May Weather19°C (66°F)132 mm (5.2 inches)81%very high
June Weather23°C (73°F)172 mm (6.8 inches)82%very high
July Weather25°C (77°F)125 mm (4.9 inches)81%very high
August Weather24°C (75°F)93 mm (3.7 inches)73%very high
September Weather21°C (71°F)110 mm (4.3 inches)73%very high
October Weather15°C (60°F)103 mm (4.1 inches)78%high
November Weather7°C (45°F)91 mm (3.6 inches)89%moderate
December Weather4°C (40°F)121 mm (4.8 inches)87%moderate

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