Spoon River Weather Forecast

    • 68
    • 76

    Chance Thunderstorms

    • 64
    • 86

    Rain Showers

    • 68
    • 81

    Rain Showers

    • 66
    • 83

    Chance Rain Showers

    • 66
    • 83

    Chance Rain Showers

    • 63
    • 81

    Chance Rain Showers

Today 14 Sep Knox

Partly sunny with isolated Showers. Highs in the mid 70s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 14 Sep Knox

Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers and Thunderstorms after midnight. Not as cool with Lows in the upper 60s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

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Spoon River Temperature Statistics

September Temperature

Galesburg Municipal Airport (17.4 miles)

  • Lowest 11 September, 2026

    58.8 °F

  • Average September

    75.9 °F

  • Highest 3 September, 2026

    93.6 °F

Climate (2021–2026)

Galesburg Municipal Airport (17.4 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    52.2 °F

  • Average High 2021–2026

    62.5 °F
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