Southern Illinois University Edwardsville Weather Forecast

    • 39
    • 62

    Mostly Sunny

    • 48
    • 61

    Mostly Cloudy

    • 51
    • 62

    Chance Rain

    • 51
    • 61

    Chance Rain Showers

    • 49
    • 63

    Chance Rain Showers

    • 45
    • 63

    Chance Rain Showers

Today 23 Oct Madison

Sunny. Highs in the lower 60s. Northwest Winds 5 to 10 Mph.

Tonight 23 Oct Madison

Mostly clear. Lows in the upper 30s. North Winds around 5 Mph, becoming east after midnight.

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Southern Illinois University Edwardsville Temperature Statistics

October Temperature

St. Louis Regional Airport (6.8 miles)

  • Lowest 20 October, 2025

    40.1 °F

  • Average October

    62.2 °F

  • Highest 1 October, 2025

    87.8 °F

Climate (2020–Present)

St. Louis Regional Airport (6.8 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    54 °F

  • Average High 2020–2025

    66.2 °F
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