Six Flags - St. Louis Weather Forecast

    • 67
    • 85

    Chance Rain Showers

    • 68
    • 83

    Chance Thunderstorms

    • 71
    • 88

    Chance Thunderstorms

    • 69
    • 87

    Thunderstorms Likely

    • 67
    • 86

    Mostly Sunny

    • 72
    • 91

    Mostly Sunny

Today 15 Jun St. Louis

Patchy fog in the morning. Mostly sunny. Highs in the mid 80s. Northeast Winds around 5 Mph.

Tonight 15 Jun St. Louis

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the upper 60s. East Winds around 5 Mph. Chance of rain 30 percent.

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Six Flags - St. Louis Temperature Statistics

June Temperature

St. Louis, Spirit Of St. Louis Airport (9.9 miles)

  • Lowest 10 June, 2025

    55.7 °F

  • Average June

    71.8 °F

  • Highest 3 June, 2025

    87.7 °F

Climate (2020–Present)

St. Louis, Spirit Of St. Louis Airport (9.9 miles)

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  • Average Low 2020–2025

    45.8 °F

  • Average 2020–2025

    56.7 °F

  • Average High 2020–2025

    68 °F
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