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September Weather in Greensburg, United States

Last updated: June 24, 2025

In Greensburg, United States, the average temperature in September hovers around 26°C (79°F). Expect a wide range, with minimums dipping to 12°C (54°F) and soaring highs reaching 37°C (99°F). During this month, precipitation totals approximately 130 mm (5.1 in) over 13 days, accompanied by a notable average humidity of 79%.

September Temperature in Greensburg

In September in Greensburg, the average temperature is 26°C (79°F). Maximums can reach 37°C (99°F), and minimums can be as low as 12°C (54°F). This makes Greensburg an ideal destination for travelers seeking warm weather while still having the option for cooler evenings.

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

The chart illustrates September temperature patterns in Greensburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greensburg, September typically has an average temperature of 26°C (79°F), with highs reaching up to 37°C (99°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec525763677579818178715955
Data source: Temperature data for Greensburg 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 Greensburg

In Greensburg in September, the precipitation amount is 130 mm (5.1 in) spread over 13 days.

September Precipitation Trends in Greensburg

The chart displays monthly precipitation patterns in Greensburg, 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 Greensburg, September typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec1231279615616417317818713011985131
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Greensburg

In Greensburg in September humidity is 79%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting. Travelers should be prepared for a heavy air that clings to the skin, making hydration essential while navigating the sights and sounds of the city.

September Average Humidity in Greensburg

This chart illustrates the average monthly humidity levels in Greensburg, 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 Greensburg is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%83%80%81%81%78%79%79%79%77%85%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Greensburg

In Greensburg in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Greensburg.

Maximum UV Index Levels in Greensburg for September

The chart shows the monthly maximum UV Index (UVI) for Greensburg 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 Greensburg typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111112121110864
Data source: Greensburg 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 Greensburg Compares to Other Months

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

This table compares monthly weather conditions in Greensburg, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)123 mm (4.8 inches)83%moderate
February Weather14°C (58°F)127 mm (5.0 inches)83%very high
March Weather17°C (64°F)96 mm (3.8 inches)80%very high
April Weather19°C (67°F)156 mm (6.1 inches)81%extreme
May Weather24°C (75°F)164 mm (6.5 inches)81%extreme
June Weather26°C (80°F)173 mm (6.8 inches)78%extreme
July Weather27°C (81°F)178 mm (7.0 inches)79%extreme
August Weather27°C (81°F)187 mm (7.4 inches)79%extreme
September Weather26°C (79°F)130 mm (5.1 inches)79%very high
October Weather22°C (71°F)119 mm (4.7 inches)77%very high
November Weather15°C (59°F)85 mm (3.4 inches)85%high
December Weather13°C (55°F)131 mm (5.2 inches)88%moderate

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