Last updated: June 24, 2025
In September, the average temperature in Stony Prairie, United States hovers around 20°C (68°F), offering a pleasant experience for visitors. However, be prepared for a range, as temperatures can drop to a chilly 5°C (41°F) or soar to a warm 34°C (93°F). Expect a moderate precipitation of 68 mm (2.7 in) spread over about 9 days, contributing to an average humidity level of 78%, which adds a touch of moisture to the air. Enjoy your time in this captivating destination!
In September in Stony Prairie, the average temperature is 20°C (68°F). Maximums can reach 34°C (93°F) and minimums can be as low as 5°C (41°F). Travelers should be prepared for warm days and cool nights, making layering essentials for this time of year.
In Stony Prairie in September, the precipitation amount is 68 mm (2.7 in) spread over 9 days.
In Stony Prairie in September humidity is 78%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes exploring the sights a bit sticky, so travelers should stay hydrated and take frequent breaks in the shade.
In Stony Prairie 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 Stony Prairie.
UV Risk Categories
Weather in Stony Prairie varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Stony Prairie, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 70 mm (2.8 inches) | 88% | moderate |
| February Weather | 0°C (32°F) | 80 mm (3.2 inches) | 87% | moderate |
| March Weather | 5°C (40°F) | 90 mm (3.5 inches) | 87% | high |
| April Weather | 10°C (50°F) | 104 mm (4.1 inches) | 87% | very high |
| May Weather | 17°C (62°F) | 140 mm (5.5 inches) | 81% | very high |
| June Weather | 22°C (72°F) | 130 mm (5.1 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 131 mm (5.1 inches) | 81% | very high |
| August Weather | 23°C (73°F) | 90 mm (3.5 inches) | 78% | very high |
| September Weather | 20°C (68°F) | 68 mm (2.7 inches) | 78% | very high |
| October Weather | 14°C (57°F) | 93 mm (3.7 inches) | 82% | high |
| November Weather | 5°C (42°F) | 89 mm (3.5 inches) | 89% | moderate |
| December Weather | 2°C (35°F) | 64 mm (2.5 inches) | 86% | low |