Appleton Weather Forecast

    • 70
    • 82

    Rain Showers

    • 71
    • 84

    Chance Thunderstorms

    • 72
    • 89

    Chance Thunderstorms

    • 67
    • 86

    Slight Chance Thunderstorms

    • 63
    • 81

    Slight Chance Rain Showers

    • 66
    • 82

    Slight Chance Thunderstorms

Today 13 Aug Knox

Patchy dense fog this morning. A chance of Thunderstorms. A chance of Showers this Morning, then Showers likely this afternoon. Some Thunderstorms may produce heavy rainfall. Highs in the lower 80s. East Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 13 Aug Knox

Mostly cloudy with a chance of Thunderstorms. A chance of Showers in the Evening, then Showers likely after midnight. Some Thunderstorms may produce heavy rainfall. Locally heavy rainfall possible after midnight. Humid with Lows around 70. East Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

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Appleton Temperature Statistics

August Temperature

Galesburg Municipal Airport (13.7 miles)

  • Lowest 3 August, 2026

    57.7 °F

  • Average August

    73 °F

  • Highest 10 August, 2026

    88.2 °F

Climate (2021–2026)

Galesburg Municipal Airport (13.7 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    62.5 °F
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