Pittsburgh weather in August
August in Pittsburgh: hot, rainy, with very humid — an excellent time to visit.
#4 of 12 months in Pittsburgh · #277 of 604 destinations to visit in August · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Pittsburgh climate normals — August
| Daytime high | 28°C / 83°F | 🥵 hot |
|---|---|---|
| Nighttime low | 19°C / 66°F | |
| Feels like (high) | 31°C / 88°F | |
| Rainfall | 89 mm / 3.5 in | 🌧 rainy |
| Rainy days | 14 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 18°C / 64°F | |
| Sunshine | 10.6 h/day | |
| Daylight | 13.7 h | |
| Wind | 12 km/h / 8 mph | |
| Air quality (US AQI) | 58 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Pittsburgh?
Loading map…
Pittsburgh in August — FAQ
- Is August a good time to visit Pittsburgh?
- August in Pittsburgh: hot, rainy, with very humid — an excellent time to visit. It ranks #4 of 12 months for Pittsburgh on SeasonMap's comfort score (81/100).
- What is the weather like in Pittsburgh in August?
- In August, Pittsburgh averages a daily high of 28.2°C and a low of 18.8°C, with about 89.4 mm of rain over roughly 14.4 rainy days.
- What is the air quality in Pittsburgh in August?
- Pittsburgh has a mean US Air Quality Index of about 58 in August.