Sunbeam Weather Forecast

    • 61
    • 90

    Thunderstorms

    • 64
    • 90

    Partly Sunny

    • 62
    • 83

    Chance Thunderstorms

    • 62
    • 86

    Chance Rain Showers

    • 62
    • 85

    Chance Rain Showers

    • 60
    • 84

    Chance Thunderstorms

    • 57
    • 83

    Mostly Sunny

Today 17 Sep Mercer

Mostly sunny with scattered Showers and Thunderstorms. Highs in the upper 80s. East Winds around 5 Mph. Chance of rain 30 percent.

Tonight 17 Sep Mercer

Partly cloudy. Lows in the lower 60s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sunbeam Temperature Statistics

September Temperature

Galesburg Municipal Airport (20.5 miles)

  • Lowest 7 September, 2025

    39.6 °F

  • Average September

    65.2 °F

  • Highest 14 September, 2025

    95.2 °F

Climate (2020–Present)

Galesburg Municipal Airport (20.5 miles)

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  • Average Low 2020–2025

    41.2 °F

  • Average 2020–2025

    51.3 °F

  • Average High 2020–2025

    61.5 °F
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