Six Flags - St. Louis Weather Forecast

    • 70
    • 92

    Thunderstorms Likely

    • 60
    • 79

    Chance Thunderstorms

    • 59
    • 80

    Mostly Sunny

    • 60
    • 82

    Mostly Sunny

    • 63
    • 84

    Mostly Sunny

    • 66
    • 86

    Partly Sunny

Today 21 Jul St. Louis

Hot and humid. Partly sunny with scattered Showers and Thunderstorms. High in the lower 90s. Temperature steady or slowly falling in the afternoon. Highest heat index Readings of around 100 in the late morning and afternoon. West wind around 10 Mph.

Tonight 21 Jul St. Louis

Partly cloudy with scattered Showers and Thunderstorms in the Evening, then mostly cloudy with Showers and Thunderstorms likely after midnight. Low around 70. Light wind. Chance of rain 60 percent.

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Six Flags - St. Louis Temperature Statistics

July Temperature

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

  • Lowest 13 July, 2019

    66.9 °F
  • Average July

    79.7 °F
  • Highest 10 July, 2019

    96.1 °F

Climate (2010–Present)

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

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  • Average Low 2010–Present

    47.4 °F
  • Average 2010–Present

    57.4 °F
  • Average High 2010–Present

    67.6 °F
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