Hermon Weather Forecast

    • 71
    • 90

    Slight Chance Thunderstorms

    • 70
    • 87

    Rain Showers

    • 67
    • 83

    Rain Showers

    • 70
    • 81

    Chance Thunderstorms

    • 72
    • 88

    Chance Thunderstorms

    • 67
    • 86

    Chance Rain Showers

    • 63
    • 80

    Mostly Cloudy

Today 11 Aug Knox

Mostly sunny with a chance of Showers and Thunderstorms. Near steady temperature in the upper 80s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent. Heat index Values up to 100.

Tonight 11 Aug Knox

Mostly clear with a slight chance of Showers and Thunderstorms this Evening, then partly cloudy after midnight. Lows in the lower 70s. Southwest Winds around 5 Mph, becoming east around 5 Mph after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hermon Temperature Statistics

August Temperature

Galesburg Municipal Airport (13 miles)

  • Lowest 3 August, 2026

    57.7 °F

  • Average August

    72.3 °F

  • Highest 9 August, 2026

    85.5 °F

Climate (2021–2026)

Galesburg Municipal Airport (13 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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