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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 24°C (75°F). During this time, temperatures can vary, with a minimum of 9°C (49°F) and a maximum reaching up to 35°C (96°F). Visitors should be prepared for some rain, as the average precipitation is 148 mm (5.8 in) over 11 days, contributing to an average humidity of 79%.

September Temperature in La Grange

In September in La Grange, the average temperature is 24°C (75°F), with maximums reaching up to 35°C (96°F) and minimums dipping as low as 9°C (49°F). This variability makes it an ideal destination for travelers seeking a warm climate with the option for cooler evenings.

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 24°C (75°F), with highs reaching up to 35°C (96°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec455054637177807975675348
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 precipitation amount is 148 mm (5.8 in) spread over a duration of 11 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 148 mm (5.8 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec8885721041151391271591486588107
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 79%. With an average temperature of 24°C (75°F), this humidity feels like a warm, tropical embrace, making traveling quite sticky and requiring ample hydration and light clothing to keep comfortable while exploring.

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 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%81%80%81%81%81%80%79%80%86%86%
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 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 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109854
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 Weather7°C (45°F)88 mm (3.5 inches)85%moderate
February Weather10°C (51°F)85 mm (3.3 inches)82%high
March Weather12°C (54°F)72 mm (2.8 inches)81%very high
April Weather17°C (63°F)104 mm (4.1 inches)80%very high
May Weather22°C (71°F)115 mm (4.5 inches)81%extreme
June Weather25°C (77°F)139 mm (5.5 inches)81%extreme
July Weather27°C (81°F)127 mm (5.0 inches)81%extreme
August Weather26°C (79°F)159 mm (6.3 inches)80%very high
September Weather24°C (75°F)148 mm (5.8 inches)79%very high
October Weather19°C (67°F)65 mm (2.5 inches)80%very high
November Weather12°C (53°F)88 mm (3.5 inches)85%moderate
December Weather9°C (49°F)107 mm (4.2 inches)86%moderate

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