Pontoon Beach Weather Forecast

    • 75
    • 97

    Hot

    • 77
    • 97

    Hot

    • 77
    • 97

    Hot

    • 76
    • 95

    Partly Sunny

    • 76
    • 95

    Slight Chance Thunderstorms

    • 74
    • 93

    Slight Chance Thunderstorms

Today 21 Jun Madison

Sunny, hot with Highs in the mid 90s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Heat index Values up to 108.

Tonight 21 Jun Madison

Clear and not as cool. Near steady temperature in the upper 70s. South Winds around 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Pontoon Beach Temperature Statistics

June Temperature

St. Louis Regional Airport (11.2 miles)

  • Lowest 2 June, 2025

    55.6 °F

  • Average June

    69.6 °F

  • Highest 3 June, 2025

    86 °F

Climate (2020–Present)

St. Louis Regional Airport (11.2 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    65.9 °F
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