St Louis, Missouri weather in June

Averages from 2021–2025 (150 days of record).

Average high: 86°F
Average low: 67°F
Rainy days: ~10 per month
Total precipitation: 4.6 in
Warmest recorded: 102°F
Coldest recorded: 53°F

Expect June days in St Louis, Missouri to top out around 86°F and cool to about 67°F overnight, with roughly 10 days of measurable rain across the month. In recent years June has ranged from 53°F to 102°F.

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Current St Louis, Missouri forecast → · Historical data by Open-Meteo (ERA5).