Gillen Airport Weather Forecast

    • 23
    • 27

    Increasing Clouds

    • 19
    • 41

    Decreasing Clouds

    • 25
    • 34

    Partly Sunny

    • 36
    • 43

    Mostly Cloudy

    • 35
    • 50

    Mostly Cloudy

    • 46
    • 53

    Mostly Cloudy

    • 38
    • 64

    Mostly Cloudy

Today 19 Dec Warren

Sunny. Much cooler with Highs in the upper 20s. Southwest Winds around 10 Mph.

Tonight 19 Dec Warren

Mostly clear this Evening, then becoming mostly cloudy. Not as cool with Lows in the lower 20s. South Winds 10 to 15 Mph.

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  • Temperature Real-Time

Gillen Airport Temperature Statistics

December Temperature

Galesburg Municipal Airport (15.5 miles)

  • Lowest 14 December, 2025

    -12.5 °F

  • Average December

    21 °F

  • Highest 9 December, 2025

    41.2 °F

Climate (2020–Present)

Galesburg Municipal Airport (15.5 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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