Six Flags - St. Louis Weather Forecast

    • 62
    • 78

    Decreasing Clouds

    • 56
    • 80

    Partly Sunny

    • 63
    • 80

    Chance Thunderstorms

    • 69
    • 80

    Thunderstorms Likely

    • 72
    • 91

    Chance Thunderstorms

    • 71
    • 93

    Mostly Sunny

Today 21 Aug St. Louis

Partly sunny early in the afternoon then becoming mostly cloudy. High in the upper 70s. Northwest wind 10 to 15 Mph with Gusts to around 25 Mph.

Tonight 21 Aug St. Louis

Partly cloudy. Low in the mid 60s. Northwest wind around 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Six Flags - St. Louis Temperature Statistics

August Temperature

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

  • Lowest 1 August, 2018

    57 °F

  • Average August

    77.5 °F

  • Highest 6 August, 2018

    99 °F

Climate (2010–Present)

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

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  • Average Low 2010–Present

    47.1 °F

  • Average 2010–Present

    57.6 °F

  • Average High 2010–Present

    67.7 °F
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