Rock Island Arsenal Weather Forecast

    • 35
    • 40

    Rain

    • 11
    • 45

    Rain

    • 25
    • 31

    Partly Sunny

    • 18
    • 43

    Partly Sunny

    • 24
    • 33

    Mostly Cloudy

    • 34
    • 41

    Mostly Cloudy

    • 29
    • 47

    Mostly Cloudy

Today 17 Dec Rock Island

Mostly sunny. Near steady temperature in the upper 30s. Southeast Winds 5 to 10 Mph.

Tonight 17 Dec Rock Island

Partly cloudy this Evening, then mostly cloudy with rain likely after midnight. Lows in the mid 30s. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph, becoming south 15 to 20 Mph with Gusts up to 35 Mph after midnight. Chance of rain 60 percent.

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Rock Island Arsenal Temperature Statistics

December Temperature

Moline Quad-City Airport (4.3 miles)

  • Lowest 14 December, 2025

    -4 °F

  • Average December

    19.7 °F

  • Highest 10 December, 2025

    44.1 °F

Climate (2020–Present)

Moline Quad-City Airport (4.3 miles)

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  • Average Low 2020–2025

    42.9 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    63.6 °F
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