St. Louis weather in June
June in St. Louis: hot, rainy — an excellent time to visit.
#5 of 12 months in St. Louis · #504 of 897 destinations to visit in June · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on St. Louis in June
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St. Louis climate normals — June
| Daytime high | 30°C / 86°F | 🥵 hot |
|---|---|---|
| Nighttime low | 20°C / 67°F | |
| Rainfall | 87 mm / 3.4 in | 🌧 rainy |
| Rainy days | 10 days | |
| Humidity | 57% | 🍃 comfortable |
| Dew point | 15°C / 59°F | |
| Sunshine | 12 h/day | |
| Daylight | 14.8 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 68 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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St. Louis in June — FAQ
- Is June a good time to visit St. Louis?
- June in St. Louis: hot, rainy — an excellent time to visit. It ranks #5 of 12 months for St. Louis on SeasonMap's comfort score (82/100).
- What is the weather like in St. Louis in June?
- In June, St. Louis averages a daily high of 30.1°C and a low of 19.5°C, with about 87.3 mm of rain over roughly 10.4 rainy days.
- What is the air quality in St. Louis in June?
- St. Louis has a mean US Air Quality Index of about 68 in June.