Illinois City Weather Forecast

    • 65
    • 89

    Slight Chance Thunderstorms

    • 63
    • 91

    Partly Sunny

    • 64
    • 88

    Slight Chance Thunderstorms

    • 63
    • 85

    Chance Rain Showers

    • 60
    • 79

    Chance Rain Showers

    • 59
    • 77

    Chance Rain Showers

Today 15 Sep Rock Island

Mostly sunny. Humid with Highs in the upper 80s. Southeast Winds 5 to 10 Mph.

Tonight 15 Sep Rock Island

Partly cloudy. Lows in the mid 60s. East Winds around 5 Mph.

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Illinois City Temperature Statistics

September Temperature

Muscatine (13 miles)

  • Lowest 7 September, 2025

    41 °F

  • Average September

    63.5 °F

  • Highest 12 September, 2025

    91.4 °F

Climate (2020–Present)

Muscatine (13 miles)

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  • Average Low 2020–2025

    42.1 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    62.8 °F
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