Pontoon Beach Weather Forecast

    • 9
    • 39

    Decreasing Clouds

    • 5
    • 13

    Chance Snow

    • 10
    • 13

    Snow

    • 2
    • 18

    Slight Chance Snow

    • 10
    • 23

    Mostly Sunny

    • 16
    • 35

    Mostly Cloudy

Today 22 Jan Madison

Partly sunny. Highs in the upper 30s. West Winds around 5 Mph.

Tonight 22 Jan Madison

Mostly clear in the Evening, then becoming mostly cloudy. Cooler with Lows around 9 above. Northwest Winds 5 to 10 Mph, increasing to north 15 to 20 Mph after midnight. Wind chill Values as low as 2 below after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Pontoon Beach Temperature Statistics

January Temperature

St. Louis Regional Airport (11.2 miles)

  • Lowest 19 January, 2026

    10.9 °F

  • Average January

    34.3 °F

  • Highest 6 January, 2026

    64.4 °F

Climate (2021–Present)

St. Louis Regional Airport (11.2 miles)

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  • Average Low 2021–2026

    46.2 °F

  • Average 2021–2026

    54.1 °F

  • Average High 2021–2026

    66.3 °F
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