Port Byron Weather Forecast

    • 66
    • 91

    Mostly Sunny

    • 64
    • 91

    Partly Sunny

    • 65
    • 91

    Partly Sunny

    • 64
    • 90

    Chance Rain Showers

    • 61
    • 83

    Chance Rain Showers

    • 56
    • 77

    Chance Rain Showers

Today 14 Sep Rock Island

Sunny, hot with Highs in the lower 90s. East Winds 5 to 10 Mph.

Tonight 14 Sep Rock Island

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

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Port Byron Temperature Statistics

September Temperature

Davenport Municipal Airport (13 miles)

  • Lowest 7 September, 2025

    39.9 °F

  • Average September

    61.4 °F

  • Highest 11 September, 2025

    84 °F

Climate (2020–Present)

Davenport Municipal Airport (13 miles)

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  • Average Low 2020–2025

    42 °F

  • Average 2020–2025

    52 °F

  • Average High 2020–2025

    62 °F
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