Port Byron Weather Forecast

    • 19
    • 25

    Increasing Clouds

    • 15
    • 40

    Partly Sunny

    • 23
    • 30

    Partly Sunny

    • 34
    • 40

    Mostly Cloudy

    • 34
    • 48

    Mostly Cloudy

    • 41
    • 50

    Mostly Cloudy

Today 19 Dec Rock Island

Mostly sunny. Much cooler with Highs in the upper 20s. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph, becoming southwest 5 to 10 Mph in the afternoon. Wind chill Values as low as 9 below in the morning.

Tonight 19 Dec Rock Island

Mostly cloudy and breezy. Much cooler. Near steady temperature around 12. West Winds 15 to 25 Mph with Gusts up to 40 Mph. Wind chill Values as low as 8 below.

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Port Byron Temperature Statistics

December Temperature

Davenport Municipal Airport (13 miles)

  • Lowest 14 December, 2025

    -7.1 °F

  • Average December

    19.3 °F

  • Highest 9 December, 2025

    43 °F

Climate (2020–Present)

Davenport Municipal Airport (13 miles)

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  • Average Low 2020–2025

    42 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    62.1 °F
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