Appleton Weather Forecast

    • 60
    • 79

    Becoming Sunny

    • 63
    • 82

    Mostly Sunny

    • 61
    • 83

    Partly Sunny

    • 65
    • 83

    Slight Chance Thunderstorms

    • 65
    • 89

    Rain Showers Likely

    • 58
    • 77

    Chance Rain Showers

Today 10 Sep Knox

Mostly cloudy. A slight chance of Showers early. Highs in the upper 70s. East Winds around 5 Mph, becoming north. Chance of rain 20 percent.

Tonight 10 Sep Knox

Partly cloudy. Lows around 60. Northeast Winds around 5 Mph.

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Appleton Temperature Statistics

September Temperature

Galesburg Municipal Airport (13.7 miles)

  • Lowest 7 September, 2026

    60.1 °F

  • Average September

    78.6 °F

  • Highest 3 September, 2026

    93.6 °F

Climate (2021–2026)

Galesburg Municipal Airport (13.7 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    52.2 °F

  • Average High 2021–2026

    62.5 °F
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