Caseyville Weather Forecast

    • 26
    • 32

    Becoming Sunny

    • 18
    • 51

    Mostly Sunny

    • 16
    • 26

    Mostly Sunny

    • 26
    • 36

    Mostly Sunny

    • 35
    • 50

    Mostly Sunny

    • 44
    • 54

    Chance Rain

Today 3 Dec St. Clair

Mostly cloudy this Morning, then clearing. Highs in the mid 30s. West Winds around 5 Mph, becoming south this afternoon.

Tonight 3 Dec St. Clair

Mostly clear. Lows in the upper 20s. Temperature rising into the lower 30s after midnight. South Winds 10 to 15 Mph.

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Caseyville Temperature Statistics

December Temperature

St. Louis Downtown Airport (8.1 miles)

  • Lowest 1 December, 2024

    21 °F

  • Average December

    28 °F

  • Highest 1 December, 2024

    30.9 °F

Climate (2019–Present)

St. Louis Downtown Airport (8.1 miles)

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  • Average Low 2019–2024

    47.3 °F

  • Average 2019–2024

    57.6 °F

  • Average High 2019–2024

    68.2 °F
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