Appleton Weather Forecast

    • 51
    • 69

    Increasing Clouds

    • 54
    • 67

    Rain Showers Likely

    • 55
    • 78

    Slight Chance Thunderstorms

    • 55
    • 79

    Partly Sunny

    • 58
    • 83

    Mostly Cloudy

    • 62
    • 84

    Chance Rain Showers

Today 21 May Knox

Partly sunny. Highs in the upper 60s. East Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 21 May Knox

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 50s. East Winds around 10 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Appleton Temperature Statistics

May Temperature

Galesburg Municipal Airport (13.7 miles)

  • Lowest 7 May, 2026

    32.7 °F

  • Average May

    58.6 °F

  • Highest 17 May, 2026

    84.4 °F

Climate (2021–Present)

Galesburg Municipal Airport (13.7 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    62.4 °F
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