Six Flags - St. Louis Weather Forecast

    • 37
    • 60

    Partly Sunny

    • 55
    • 67

    Mostly Cloudy

    • 20
    • 69

    Rain

    • 12
    • 30

    Partly Sunny

    • 27
    • 37

    Mostly Cloudy

    • 39
    • 58

    Mostly Cloudy

Today 13 Mar St. Louis

Mostly sunny. Highs around 60. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 13 Mar St. Louis

Partly cloudy in the Evening, then becoming mostly clear. Lows in the upper 30s. Northwest Winds 5 to 10 Mph, becoming east after midnight.

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Six Flags - St. Louis Temperature Statistics

March Temperature

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

  • Lowest 1 March, 2026

    27 °F

  • Average March

    54.2 °F

  • Highest 10 March, 2026

    84.9 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    57.2 °F

  • Average High 2021–2026

    68.6 °F
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