Last updated: June 24, 2025
In September, the average temperature in La Grange, United States hovers around 21°C (71°F), making it a pleasant time to explore. However, temperatures can vary significantly, with minimums dipping to 5°C (42°F) and maximums soaring to 35°C (95°F). Be prepared for potential rainfall as precipitation reaches 84 mm (3.3 in) over an average of 7 days. The air tends to be quite humid, averaging around 76%, creating a warm and sticky atmosphere.
In September in La Grange, the average temperature is 21°C (71°F). Maximum temperatures can reach 35°C (95°F), while minimums can drop as low as 5°C (42°F). This range makes it a great time for travelers looking to enjoy a variety of outdoor activities and experiences.
In La Grange in September, the total precipitation amount is 84 mm (3.3 in) distributed over a span of 7 days.
In La Grange in September humidity is 76%. With an average temperature of 21°C (71°F), this humidity feels like a warm, enveloping blanket, making traveling both refreshing and a bit exhausting, as the air clings to your skin and you often find yourself reaching for water to stay hydrated.
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.
UV Risk Categories
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.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 60 mm (2.4 inches) | 82% | moderate |
| February Weather | -1°C (31°F) | 59 mm (2.3 inches) | 80% | moderate |
| March Weather | 7°C (44°F) | 113 mm (4.4 inches) | 80% | high |
| April Weather | 11°C (53°F) | 102 mm (4.0 inches) | 80% | very high |
| May Weather | 19°C (66°F) | 168 mm (6.6 inches) | 82% | very high |
| June Weather | 24°C (76°F) | 108 mm (4.2 inches) | 83% | extreme |
| July Weather | 26°C (79°F) | 86 mm (3.4 inches) | 81% | very high |
| August Weather | 24°C (76°F) | 90 mm (3.6 inches) | 80% | very high |
| September Weather | 21°C (71°F) | 84 mm (3.3 inches) | 76% | very high |
| October Weather | 14°C (57°F) | 106 mm (4.2 inches) | 76% | high |
| November Weather | 6°C (42°F) | 53 mm (2.1 inches) | 85% | moderate |
| December Weather | 2°C (36°F) | 42 mm (1.7 inches) | 86% | moderate |