Six Flags - St. Louis Weather Forecast

    • 3
    • 31

    Mostly Sunny

    • 10
    • 32

    Increasing Clouds

    • 6
    • 23

    Mostly Cloudy

    • 0
    • 16

    Partly Sunny

    • 2
    • 18

    Partly Sunny

    • 15
    • 29

    Mostly Cloudy

    • 16
    • 34

    Mostly Cloudy

Today 27 Jan St. Louis

Sunny. Not as cool with Highs in the upper 20s. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 27 Jan St. Louis

Mostly clear. Cold with Lows around 1 above. Northwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Six Flags - St. Louis Temperature Statistics

January Temperature

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

  • Lowest 24 January, 2026

    1.9 °F

  • Average January

    32.3 °F

  • Highest 6 January, 2026

    69.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    57.1 °F

  • Average High 2021–2026

    68.3 °F
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