Six Flags - St. Louis Weather Forecast

    • 40
    • 60

    Partly Sunny

    • 36
    • 59

    Mostly Cloudy

    • 36
    • 61

    Mostly Sunny

    • 50
    • 69

    Partly Sunny

    • 45
    • 71

    Chance Thunderstorms

    • 44
    • 68

    Partly Sunny

    • 51
    • 67

    Rain Showers Likely

Today 19 Apr St. Louis

Sunny and much cooler. Near steady temperature in the lower 60s. North Winds around 10 Mph.

Tonight 19 Apr St. Louis

Mostly cloudy. Lows around 40. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Six Flags - St. Louis Temperature Statistics

April Temperature

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

  • Lowest 5 April, 2024

    28.9 °F

  • Average April

    58.9 °F

  • Highest 14 April, 2024

    87.7 °F

Climate (2019–Present)

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

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  • Average Low 2019–2024

    46.2 °F

  • Average 2019–2024

    56.7 °F

  • Average High 2019–2024

    67.7 °F
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