Illinois City Weather Forecast

    • 13
    • 40

    Clearing Late

    • 18
    • 26

    Mostly Sunny

    • 17
    • 30

    Partly Sunny

    • 19
    • 30

    Partly Sunny

    • 28
    • 37

    Mostly Cloudy

    • 28
    • 42

    Partly Sunny

Today 31 Dec Rock Island

Cloudy. A slight chance of snow this morning. A chance of snow with a slight chance of rain this afternoon. Little or no snow accumulation. Highs in the upper 30s. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 40 percent.

Tonight 31 Dec Rock Island

Mostly cloudy with a slight chance of snow in the Evening, then partly cloudy after midnight. Much cooler with Lows around 12. North Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of snow 20 percent.

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Illinois City Temperature Statistics

December Temperature

Muscatine (13 miles)

  • Lowest 14 December, 2025

    -5.8 °F

  • Average December

    27.6 °F

  • Highest 23 December, 2025

    48.2 °F

Climate (2020–Present)

Muscatine (13 miles)

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  • Average Low 2020–2025

    42.3 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    63 °F
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