Rock Island Arsenal Weather Forecast

    • 67
    • 93

    Decreasing Clouds

    • 68
    • 94

    Mostly Sunny

    • 68
    • 92

    Partly Sunny

    • 66
    • 91

    Partly Sunny

    • 65
    • 89

    Chance Rain Showers

    • 62
    • 82

    Chance Rain Showers

Today 13 Sep Rock Island

Sunny, hot. Near steady temperature in the lower 90s. Southwest Winds 5 to 10 Mph.

Tonight 13 Sep Rock Island

Mostly clear in the Evening, then becoming partly cloudy. Humid with Lows in the upper 60s. Southeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rock Island Arsenal Temperature Statistics

September Temperature

Moline Quad-City Airport (4.3 miles)

  • Lowest 7 September, 2025

    41 °F

  • Average September

    61.4 °F

  • Highest 11 September, 2025

    82.9 °F

Climate (2020–Present)

Moline Quad-City Airport (4.3 miles)

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  • Average Low 2020–2025

    42.8 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    63.6 °F
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