Galesburg Weather Forecast

    • 11
    • 50

    Chance Rain/Snow

    • 25
    • 31

    Partly Sunny

    • 20
    • 44

    Partly Sunny

    • 24
    • 33

    Mostly Cloudy

    • 34
    • 41

    Mostly Cloudy

    • 33
    • 49

    Mostly Cloudy

Today 18 Dec Knox

Mostly cloudy with a chance of rain and snow. Breezy with Highs around 50. Temperature falling into the lower 30s. West Winds 20 to 25 Mph with Gusts up to 40 Mph. Chance of precipitation 50 percent.

Tonight 18 Dec Knox

Mostly cloudy. A slight chance of snow Showers in the evening. Windy and much cooler with Lows around 11. Northwest Winds 20 to 30 Mph with Gusts up to 45 Mph. Chance of snow 20 percent. Wind chill Values as low as 8 below.

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Galesburg Temperature Statistics

December Temperature

Galesburg Municipal Airport (3.1 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 (3.1 miles)

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  • Average Low 2020–2025

    41.3 °F

  • Average 2020–2025

    51.5 °F

  • Average High 2020–2025

    61.7 °F
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