Edwardsville Weather Forecast

    • 30
    • 43

    Mostly Sunny

    • 45
    • 51

    Partly Sunny

    • 44
    • 61

    Partly Sunny

    • 57
    • 67

    Mostly Cloudy

    • 49
    • 73

    Mostly Cloudy

    • 40
    • 60

    Mostly Cloudy

Today 21 Dec Madison

Sunny, cooler with Highs in the mid 40s. East Winds around 5 Mph.

Tonight 21 Dec Madison

Mostly clear in the Evening, then becoming partly cloudy. Lows around 30. Southeast Winds around 5 Mph.

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Edwardsville Temperature Statistics

December Temperature

St. Louis Regional Airport (6.8 miles)

  • Lowest 5 December, 2025

    4.5 °F

  • Average December

    29.3 °F

  • Highest 17 December, 2025

    55.4 °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

    66.1 °F
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