Last updated: June 24, 2025
In September, the average temperature in Fort Wayne, United States hovers around 20°C (68°F), making it a pleasant time to visit. However, be prepared for a temperature range with minimums dipping to 4°C (39°F) and highs soaring to 33°C (91°F). Expect a fair share of rain as well, with 66 mm (2.6 in) of precipitation spread over about 7 days. Don't forget, the average humidity is on the higher side at 78%, adding a touch of tropical feel to your experience!
In September in Fort Wayne, the average temperature is 20°C (68°F). Maximums can reach 33°C (91°F) and minimums can be as low as 4°C (39°F). This makes Fort Wayne a great destination for travelers looking to enjoy a mild climate with a variety of temperature experiences.
In Fort Wayne in September, the precipitation amount is 66 mm (2.6 in) over a period of 7 days.
In Fort Wayne 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 Fort Wayne 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 Fort Wayne.
UV Risk Categories
Weather in Fort Wayne varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Fort Wayne, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (28°F) | 73 mm (2.9 inches) | 85% | moderate |
| February Weather | -1°C (30°F) | 77 mm (3.0 inches) | 85% | moderate |
| March Weather | 4°C (40°F) | 101 mm (4.0 inches) | 86% | high |
| April Weather | 9°C (49°F) | 98 mm (3.9 inches) | 87% | very high |
| May Weather | 16°C (62°F) | 128 mm (5.1 inches) | 81% | very high |
| June Weather | 22°C (72°F) | 122 mm (4.8 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 106 mm (4.2 inches) | 81% | very high |
| August Weather | 23°C (73°F) | 101 mm (4.0 inches) | 79% | very high |
| September Weather | 20°C (68°F) | 66 mm (2.6 inches) | 78% | very high |
| October Weather | 13°C (56°F) | 108 mm (4.3 inches) | 81% | high |
| November Weather | 5°C (41°F) | 82 mm (3.2 inches) | 89% | moderate |
| December Weather | 1°C (34°F) | 60 mm (2.4 inches) | 86% | low |