Last updated: June 24, 2025
In September, the average temperature in Peotone, United States hovers around 20°C (69°F), providing a pleasant climate for outdoor activities. However, temperatures can vary widely, dipping to a chilly 5°C (41°F) and soaring as high as 34°C (94°F). Visitors should be prepared for a bit of rain, as the area receives an average precipitation of 77 mm (3.0 in) over 8 days. With an average humidity of 80%, the air tends to feel comfortably warm, making it an ideal time to explore all that this vibrant destination has to offer!
In September in Peotone, the average temperature is 20°C (69°F). Maximums can reach 34°C (94°F), while minimums can drop as low as 5°C (41°F). This makes Peotone a suitable destination for travelers looking to experience mild weather with the possibility of warmer days.
In Peotone in September, the precipitation amount is 77 mm (3.0 in) distributed over 8 days.
In Peotone in September, humidity is 80%. With an average temperature of 20°C (69°F), this humidity feels like a warm blanket enveloping you, making every step slightly more challenging as you navigate the air that clings to your skin, often leaving you longing for a cool breeze while exploring the sights.
In Peotone 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 Peotone.
UV Risk Categories
Weather in Peotone varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Peotone, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 69 mm (2.7 inches) | 82% | moderate |
| February Weather | -2°C (29°F) | 71 mm (2.8 inches) | 83% | moderate |
| March Weather | 5°C (41°F) | 95 mm (3.7 inches) | 84% | high |
| April Weather | 10°C (50°F) | 120 mm (4.7 inches) | 85% | very high |
| May Weather | 17°C (62°F) | 161 mm (6.3 inches) | 79% | very high |
| June Weather | 23°C (73°F) | 124 mm (4.9 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 98 mm (3.9 inches) | 80% | very high |
| August Weather | 23°C (74°F) | 92 mm (3.6 inches) | 81% | very high |
| September Weather | 20°C (69°F) | 77 mm (3.0 inches) | 80% | very high |
| October Weather | 13°C (56°F) | 135 mm (5.3 inches) | 82% | high |
| November Weather | 4°C (40°F) | 64 mm (2.5 inches) | 88% | moderate |
| December Weather | 1°C (34°F) | 59 mm (2.3 inches) | 84% | low |