Pontoon Beach Weather Forecast

    • 60
    • 80

    Mostly Sunny

    • 56
    • 83

    Rain

    • 34
    • 67

    Rain

    • 45
    • 54

    Partly Sunny

    • 39
    • 64

    Partly Sunny

    • 50
    • 66

    Mostly Cloudy

Today 9 Mar Madison

Sunny. Not as cool with Highs around 80. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 9 Mar Madison

Partly cloudy in the Evening, then becoming mostly clear. Not as cool with Lows around 60. South Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Pontoon Beach Temperature Statistics

March Temperature

St. Louis Regional Airport (11.2 miles)

  • Lowest 1 March, 2026

    26.6 °F

  • Average March

    46.5 °F

  • Highest 6 March, 2026

    78.8 °F

Climate (2021–Present)

St. Louis Regional Airport (11.2 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    66.5 °F
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