Illinois City Weather Forecast

    • 59
    • 81

    Becoming Sunny

    • 64
    • 81

    Mostly Sunny

    • 61
    • 83

    Slight Chance Thunderstorms

    • 68
    • 81

    Chance Thunderstorms

    • 64
    • 89

    Rain Showers Likely

    • 58
    • 75

    Chance Rain Showers

Today 10 Sep Rock Island

Mostly cloudy this Morning, then becoming mostly sunny. Patchy fog this morning. Highs around 80. North Winds around 5 Mph.

Tonight 10 Sep Rock Island

Clear. Lows in the upper 50s. Northeast Winds around 5 Mph, becoming southeast after midnight.

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Illinois City Temperature Statistics

September Temperature

Muscatine (13 miles)

  • Lowest 7 September, 2026

    66.2 °F

  • Average September

    80.9 °F

  • Highest 1 September, 2026

    96.8 °F

Climate (2021–2026)

Muscatine (13 miles)

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  • Average Low 2021–2026

    42.4 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    63.5 °F
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