Edwardsville Weather Forecast

    • 77
    • 93

    Slight Chance Thunderstorms

    • 78
    • 95

    Partly Sunny

    • 77
    • 95

    Chance Thunderstorms

    • 73
    • 93

    Thunderstorms Likely

    • 70
    • 86

    Thunderstorms Likely

    • 69
    • 84

    Chance Thunderstorms

Today 9 Aug Madison

Sunny. Highs in the mid 90s. South Winds 10 to 15 Mph. Heat index Values up to 106 this afternoon.

Tonight 9 Aug Madison

Mostly clear. Humid with Lows in the mid 70s. South Winds 5 to 10 Mph. Heat index Values up to 104 early in the evening.

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Edwardsville Temperature Statistics

August Temperature

St. Louis Regional Airport (6.8 miles)

  • Lowest 3 August, 2026

    63.5 °F

  • Average August

    71.5 °F

  • Highest 4 August, 2026

    86 °F

Climate (2021–2026)

St. Louis Regional Airport (6.8 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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