Six Flags - St. Louis Weather Forecast

    • 60
    • 82

    Rain Showers

    • 52
    • 76

    Rain Showers

    • 50
    • 67

    Mostly Cloudy

    • 58
    • 73

    Chance Rain Showers

    • 67
    • 85

    Chance Rain Showers

    • 57
    • 81

    Rain Showers Likely

Today 24 Apr St. Louis

Mostly sunny. Highs in the lower 80s. Southeast Winds around 5 Mph.

Tonight 24 Apr St. Louis

Mostly clear. Lows in the mid 50s. East Winds around 5 Mph.

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  • Temperature Real-Time

Six Flags - St. Louis Temperature Statistics

April Temperature

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

  • Lowest 8 April, 2025

    27.8 °F

  • Average April

    55.1 °F

  • Highest 13 April, 2025

    86.6 °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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