Edwardsville Weather Forecast

    • 57
    • 71

    Mostly Cloudy

    • 61
    • 75

    Mostly Cloudy

    • 58
    • 79

    Mostly Cloudy

    • 58
    • 72

    Slight Chance Rain Showers

    • 57
    • 77

    Partly Sunny

    • 60
    • 82

    Partly Sunny

    • 65
    • 85

    Rain Showers Likely

Today 23 Sep Madison

Mostly cloudy with a chance of Showers in the Morning, then partly sunny with a chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs around 80. Chance of rain 50 percent.

Tonight 23 Sep Madison

Mostly cloudy. Lows in the upper 50s. Northeast Winds around 5 Mph.

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  • Temperature Real-Time

Edwardsville Temperature Statistics

September Temperature

St. Louis Regional Airport (6.8 miles)

  • Lowest 8 September, 2026

    59 °F

  • Average September

    77.1 °F

  • Highest 5 September, 2026

    100.4 °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

    54.6 °F

  • Average High 2021–2026

    66.7 °F
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