Galesburg Weather Forecast

    • 59
    • 85

    Partly Sunny

    • 60
    • 88

    Mostly Sunny

    • 57
    • 83

    Partly Sunny

    • 56
    • 81

    Partly Sunny

    • 55
    • 80

    Partly Sunny

    • 54
    • 80

    Mostly Sunny

Today 26 May Knox

Mostly sunny in the Morning, then becoming mostly cloudy. Highs in the mid 80s. Southeast Winds around 5 Mph.

Tonight 26 May Knox

Mostly cloudy. Lows in the mid 50s. Light and variable Winds.

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Galesburg Temperature Statistics

May Temperature

Galesburg Municipal Airport (3.1 miles)

  • Lowest 7 May, 2026

    32.7 °F

  • Average May

    59.2 °F

  • Highest 17 May, 2026

    84.4 °F

Climate (2021–Present)

Galesburg Municipal Airport (3.1 miles)

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  • Average Low 2021–2026

    41.6 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    62.3 °F
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