Cleveland weather in September
September in Cleveland: nice, a little rain, with clean air — one of the best months to visit.
#1 of 12 months in Cleveland · #97 of 897 destinations to visit in September · comfort 92/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Cleveland in September
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Cleveland climate normals — September
| Daytime high | 23°C / 74°F | 😎 nice |
|---|---|---|
| Nighttime low | 17°C / 62°F | |
| Rainfall | 67 mm / 2.6 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 78% | 💦 very humid |
| Dew point | 15°C / 58°F | |
| Sunshine | 9.8 h/day | |
| Daylight | 12.5 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 43 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Cleveland in September — FAQ
- Is September a good time to visit Cleveland?
- September in Cleveland: nice, a little rain, with clean air — one of the best months to visit. It ranks #1 of 12 months for Cleveland on SeasonMap's comfort score (92/100).
- What is the weather like in Cleveland in September?
- In September, Cleveland averages a daily high of 23.3°C and a low of 16.5°C, with about 67.2 mm of rain over roughly 9.4 rainy days.
- What is the air quality in Cleveland in September?
- Cleveland has a mean US Air Quality Index of about 43 in September.