Cincinnati weather in May
May in Cincinnati: nice, rainy — one of the best months to visit.
#2 of 12 months in Cincinnati · #150 of 897 destinations to visit in May · comfort 90/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Cincinnati in May
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Cincinnati climate normals — May
| Daytime high | 23°C / 73°F | 😎 nice |
|---|---|---|
| Nighttime low | 13°C / 55°F | |
| Rainfall | 109 mm / 4.3 in | 🌧 rainy |
| Rainy days | 13 days | |
| Humidity | 69% | 💧 humid |
| Dew point | 12°C / 53°F | |
| Sunshine | 9.6 h/day | |
| Daylight | 14.3 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 51 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Cincinnati in May — FAQ
- Is May a good time to visit Cincinnati?
- May in Cincinnati: nice, rainy — one of the best months to visit. It ranks #2 of 12 months for Cincinnati on SeasonMap's comfort score (90/100).
- What is the weather like in Cincinnati in May?
- In May, Cincinnati averages a daily high of 22.5°C and a low of 12.5°C, with about 108.9 mm of rain over roughly 12.8 rainy days.
- What is the air quality in Cincinnati in May?
- Cincinnati has a mean US Air Quality Index of about 51 in May.