Southern Illinois Airport Weather Forecast

    • 21
    • 31

    Partly Sunny

    • 21
    • 42

    Increasing Clouds

    • 19
    • 30

    Mostly Cloudy

    • 24
    • 39

    Partly Sunny

    • 27
    • 42

    Mostly Cloudy

    • 23
    • 40

    Mostly Cloudy

    • 27
    • 37

    Mostly Cloudy

Today 2 Dec Jackson

Mostly sunny. Highs in the lower 30s. Northwest Winds around 5 Mph.

Tonight 2 Dec Jackson

Mostly cloudy. Lows in the lower 20s. South Winds around 5 Mph.

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Southern Illinois Airport Temperature Statistics

December Temperature

Southern Illinois Airport (0 miles)

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  • Average December

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Climate (2020–Present)

Southern Illinois Airport (0 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    68.8 °F
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