Hermon Weather Forecast

    • 23
    • 31

    Increasing Clouds

    • 18
    • 44

    Partly Sunny

    • 24
    • 35

    Partly Sunny

    • 34
    • 42

    Mostly Cloudy

    • 36
    • 52

    Mostly Cloudy

    • 46
    • 56

    Mostly Cloudy

Today 19 Dec Knox

Mostly sunny. Much cooler with Highs around 30. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph, becoming southwest around 10 Mph in the afternoon. Wind chill Values as low as 8 below in the morning.

Tonight 19 Dec Knox

Partly cloudy in the Evening, then becoming mostly cloudy. Not as cool with Lows in the lower 20s. Temperature rising into the lower 30s after midnight. South Winds 10 to 15 Mph with Gusts up to 30 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Hermon Temperature Statistics

December Temperature

Galesburg Municipal Airport (13 miles)

  • Lowest 14 December, 2025

    -12.5 °F

  • Average December

    20.1 °F

  • Highest 9 December, 2025

    41.2 °F

Climate (2020–Present)

Galesburg Municipal Airport (13 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    41.3 °F

  • Average 2020–2025

    51.5 °F

  • Average High 2020–2025

    61.7 °F
Get WillyWeather+ to remove ads