Last updated: June 24, 2025
In September, the average temperature in Port Clinton, United States hovers around 20°C (69°F), providing a pleasant climate. Temperatures can dip to a cool 8°C (47°F) at night, while daytime highs can soar to a warm 32°C (90°F). Expect 69 mm (2.7 in) of precipitation over about 10 days, contributing to an average humidity of 78%. Whether you're exploring the outdoors or enjoying cozy indoor activities, Port Clinton offers a diverse range of experiences this month.
In September in Port Clinton, the average temperature is 20°C (69°F). Maximum temperatures can reach 32°C (90°F), while minimums can be as low as 8°C (47°F). It's a great time to visit for those who enjoy mild to warm weather with a chance to experience some cooler evenings.
In Port Clinton in September, the precipitation amount is 69 mm (2.7 in) spread over a period of 10 days.
In Port Clinton in September, humidity is 78%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket, making travel somewhat uncomfortable as sweat clings to your skin and the air feels thick and heavy, urging you to seek out shaded areas and refreshing drinks.
In Port Clinton 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 Port Clinton.
UV Risk Categories
Weather in Port Clinton varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Port Clinton, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (30°F) | 71 mm (2.8 inches) | 88% | moderate |
| February Weather | -1°C (31°F) | 77 mm (3.0 inches) | 87% | moderate |
| March Weather | 4°C (39°F) | 83 mm (3.3 inches) | 87% | high |
| April Weather | 9°C (49°F) | 100 mm (3.9 inches) | 87% | very high |
| May Weather | 16°C (61°F) | 131 mm (5.2 inches) | 81% | very high |
| June Weather | 22°C (71°F) | 115 mm (4.5 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 125 mm (4.9 inches) | 81% | very high |
| August Weather | 23°C (74°F) | 86 mm (3.4 inches) | 78% | very high |
| September Weather | 20°C (69°F) | 69 mm (2.7 inches) | 78% | very high |
| October Weather | 14°C (58°F) | 97 mm (3.8 inches) | 82% | high |
| November Weather | 5°C (42°F) | 91 mm (3.6 inches) | 89% | moderate |
| December Weather | 2°C (35°F) | 64 mm (2.5 inches) | 86% | low |