Pittsburgh weather in May
May in Pittsburgh: nice, rainy — one of the best months to visit.
#1 of 12 months in Pittsburgh · #140 of 604 destinations to visit in May · comfort 88/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Pittsburgh climate normals — May
| Daytime high | 22°C / 71°F | 😎 nice |
|---|---|---|
| Nighttime low | 11°C / 53°F | |
| Feels like (high) | 22°C / 72°F | |
| Rainfall | 129 mm / 5.1 in | 🌧 rainy |
| Rainy days | 14 days | |
| Humidity | 72% | 💧 humid |
| Dew point | 11°C / 51°F | |
| Sunshine | 10.1 h/day | |
| Daylight | 14.4 h | |
| Wind | 15 km/h / 9 mph | |
| Snowfall | 0.1 cm / 0 in | |
| Air quality (US AQI) | 53 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Pittsburgh in May — FAQ
- Is May a good time to visit Pittsburgh?
- May in Pittsburgh: nice, rainy — one of the best months to visit. It ranks #1 of 12 months for Pittsburgh on SeasonMap's comfort score (88/100).
- What is the weather like in Pittsburgh in May?
- In May, Pittsburgh averages a daily high of 21.6°C and a low of 11.4°C, with about 128.7 mm of rain over roughly 14 rainy days.
- What is the air quality in Pittsburgh in May?
- Pittsburgh has a mean US Air Quality Index of about 53 in May.