Last updated: June 24, 2025
In September, the average temperature in Prairie du Chien, United States is a pleasant 18°C (65°F). Expect minimums to dip to 3°C (38°F), while the mercury can rise to a maximum of 33°C (91°F). During this month, precipitation amounts average 120 mm (4.7 in) over 11 days, and humidity levels hover around 74%, creating a uniquely comfortable atmosphere.
In September in Prairie du Chien, the average temperature is 18°C (65°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as 3°C (38°F). This climate makes Prairie du Chien a great destination for travelers seeking a mix of warm days and cool evenings.
In Prairie du Chien in September, the precipitation amount is 120 mm (4.7 in) during a span of 11 days.
In Prairie du Chien in September humidity is 74%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can make even short walks feel laborious, leading travelers to seek shade and refreshment more often.
In Prairie du Chien 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 Prairie du Chien.
UV Risk Categories
Weather in Prairie du Chien varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Prairie du Chien, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 41 mm (1.6 inches) | 84% | moderate |
| February Weather | -6°C (22°F) | 54 mm (2.1 inches) | 85% | moderate |
| March Weather | 2°C (37°F) | 60 mm (2.4 inches) | 84% | moderate |
| April Weather | 8°C (47°F) | 78 mm (3.1 inches) | 83% | very high |
| May Weather | 16°C (60°F) | 144 mm (5.6 inches) | 75% | very high |
| June Weather | 22°C (72°F) | 131 mm (5.1 inches) | 79% | very high |
| July Weather | 24°C (75°F) | 114 mm (4.5 inches) | 75% | very high |
| August Weather | 22°C (71°F) | 91 mm (3.6 inches) | 69% | very high |
| September Weather | 18°C (65°F) | 120 mm (4.7 inches) | 74% | very high |
| October Weather | 10°C (51°F) | 129 mm (5.1 inches) | 79% | moderate |
| November Weather | 2°C (36°F) | 48 mm (1.9 inches) | 88% | moderate |
| December Weather | -2°C (29°F) | 39 mm (1.5 inches) | 82% | low |