Cuyahoga Valley National Park weather in September
September in Cuyahoga Valley National Park: warm, a little rain, with clean air — an excellent time to visit.
#3 of 12 months in Cuyahoga Valley National Park · #194 of 604 destinations to visit in September · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Cuyahoga Valley National Park climate normals — September
| Daytime high | 23°C / 74°F | 🌤 warm |
|---|---|---|
| Nighttime low | 16°C / 60°F | |
| Feels like (high) | 24°C / 75°F | |
| Rainfall | 70 mm / 2.8 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 14°C / 58°F | |
| Sunshine | 9.5 h/day | |
| Daylight | 12.5 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 42 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Cuyahoga Valley National Park?
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Cuyahoga Valley National Park in September — FAQ
- Is September a good time to visit Cuyahoga Valley National Park?
- September in Cuyahoga Valley National Park: warm, a little rain, with clean air — an excellent time to visit. It ranks #3 of 12 months for Cuyahoga Valley National Park on SeasonMap's comfort score (85/100).
- What is the weather like in Cuyahoga Valley National Park in September?
- In September, Cuyahoga Valley National Park averages a daily high of 23.4°C and a low of 15.8°C, with about 70.1 mm of rain over roughly 9.2 rainy days.
- What is the air quality in Cuyahoga Valley National Park in September?
- Cuyahoga Valley National Park has a mean US Air Quality Index of about 42 in September.