Milwaukee weather in August
August in Milwaukee: warm, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Milwaukee · #144 of 604 destinations to visit in August · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Milwaukee climate normals — August
| Daytime high | 25°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 20°C / 68°F | |
| Feels like (high) | 27°C / 81°F | |
| Rainfall | 64 mm / 2.5 in | 🌦 some rain |
| Rainy days | 8 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 17°C / 63°F | |
| Sunshine | 11.4 h/day | |
| Daylight | 13.9 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 50 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Milwaukee in August — FAQ
- Is August a good time to visit Milwaukee?
- August in Milwaukee: warm, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Milwaukee on SeasonMap's comfort score (87/100).
- What is the weather like in Milwaukee in August?
- In August, Milwaukee averages a daily high of 24.5°C and a low of 19.8°C, with about 63.6 mm of rain over roughly 8 rainy days.
- What is the air quality in Milwaukee in August?
- Milwaukee has a mean US Air Quality Index of about 50 in August.