Milwaukee weather in May
May in Milwaukee: cool, rainy — a great time to visit.
#5 of 12 months in Milwaukee · #396 of 604 destinations to visit in May · comfort 77/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Milwaukee climate normals — May
| Daytime high | 14°C / 57°F | 🙂 cool |
|---|---|---|
| Nighttime low | 9°C / 48°F | |
| Feels like (high) | 12°C / 54°F | |
| Rainfall | 102 mm / 4 in | 🌧 rainy |
| Rainy days | 11 days | |
| Humidity | 75% | 💧 humid |
| Dew point | 7°C / 44°F | |
| Sunshine | 9.9 h/day | |
| Daylight | 14.7 h | |
| Wind | 21 km/h / 13 mph | |
| Snowfall | 0.4 cm / 0.2 in | |
| Air quality (US AQI) | 52 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Milwaukee in May — FAQ
- Is May a good time to visit Milwaukee?
- May in Milwaukee: cool, rainy — a great time to visit. It ranks #5 of 12 months for Milwaukee on SeasonMap's comfort score (77/100).
- What is the weather like in Milwaukee in May?
- In May, Milwaukee averages a daily high of 13.9°C and a low of 8.7°C, with about 101.7 mm of rain over roughly 10.8 rainy days.
- What is the air quality in Milwaukee in May?
- Milwaukee has a mean US Air Quality Index of about 52 in May.