East Alton Weather Forecast

    • 69
    • 87

    Mostly Cloudy

    • 65
    • 90

    Chance Thunderstorms

    • 63
    • 88

    Mostly Sunny

    • 62
    • 87

    Mostly Sunny

    • 67
    • 89

    Mostly Sunny

    • 73
    • 94

    Partly Sunny

    • 74
    • 95

    Slight Chance Rain Showers

Today 25 Aug Madison

Mostly sunny. Near steady temperature in the mid 80s. Southeast Winds around 5 Mph.

Tonight 25 Aug Madison

Mostly cloudy. Lows in the upper 60s. Southeast Winds around 5 Mph.

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East Alton Temperature Statistics

August Temperature

St. Louis Regional Airport (3.7 miles)

  • Lowest 23 August, 2026

    59 °F

  • Average August

    75.4 °F

  • Highest 11 August, 2026

    95 °F

Climate (2021–2026)

St. Louis Regional Airport (3.7 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    54.5 °F

  • Average High 2021–2026

    66.6 °F
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