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September Weather in La Grange, United States

Last updated: June 24, 2025

In La Grange, United States, the average temperature in September is a pleasant 22°C (71°F). Expect a range, with minimums dipping to 8°C (46°F) and highs reaching up to 36°C (96°F). During this month, you'll encounter approximately 109 mm (4.3 in) of precipitation spread over 8 days, along with an average humidity of 69%. Enjoy the diverse weather while exploring!

September Temperature in La Grange

In September in La Grange, the average temperature is 22°C (71°F). Maximum temperatures can reach 36°C (96°F), while minimums can drop as low as 8°C (46°F). It's advisable to pack a mix of clothing to accommodate both warm and cooler weather during your travels.

September Weather in La Grange: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in La Grange, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Grange, September typically has an average temperature of 22°C (71°F), with highs reaching up to 36°C (96°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec353947556774787671604540
Data source: Temperature data for La Grange 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 La Grange

In La Grange in September, the total precipitation amount is 109 mm (4.3 in) spread over 8 days.

September Precipitation Trends in La Grange

The chart displays monthly precipitation patterns in La Grange, 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 La Grange, September typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec87127137139125151999510910393107
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in La Grange

In La Grange in September humidity is 69%. With an average temperature of 22°C (71°F), this humidity feels like walking through a warm embrace, making travel slightly uncomfortable yet refreshing, as the air clings to your skin and adds a layer of warmth to your exploration.

September Average Humidity in La Grange

This chart illustrates the average monthly humidity levels in La Grange, 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 La Grange is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in La Grange

In La Grange 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 La Grange.

Maximum UV Index Levels in La Grange for September

The chart shows the monthly maximum UV Index (UVI) for La Grange 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 La Grange typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110108743
Data source: La Grange 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 La Grange Compares to Other Months

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

This table compares monthly weather conditions in La Grange, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)87 mm (3.4 inches)87%moderate
February Weather4°C (39°F)127 mm (5.0 inches)85%moderate
March Weather8°C (47°F)137 mm (5.4 inches)86%high
April Weather13°C (56°F)139 mm (5.5 inches)84%very high
May Weather19°C (67°F)125 mm (4.9 inches)79%very high
June Weather24°C (75°F)151 mm (5.9 inches)82%extreme
July Weather26°C (78°F)99 mm (3.9 inches)79%very high
August Weather24°C (76°F)95 mm (3.8 inches)70%very high
September Weather22°C (71°F)109 mm (4.3 inches)69%very high
October Weather16°C (60°F)103 mm (4.1 inches)76%high
November Weather7°C (45°F)93 mm (3.7 inches)88%moderate
December Weather5°C (40°F)107 mm (4.2 inches)87%moderate

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