Sunbeam Weather Forecast

    • 59
    • 72

    Chance Rain Showers

    • 54
    • 65

    Chance Rain Showers

    • 48
    • 63

    Mostly Cloudy

    • 49
    • 66

    Partly Sunny

    • 52
    • 67

    Mostly Cloudy

    • 52
    • 69

    Partly Sunny

Today 20 Sep Mercer

Occasional Showers and Thunderstorms late this Morning, then Showers likely this afternoon. Near steady temperature in the upper 60s. Northeast Winds 10 to 15 Mph. Chance of rain 90 percent.

Tonight 20 Sep Mercer

Cloudy. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Lows in the upper 50s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sunbeam Temperature Statistics

September Temperature

Galesburg Municipal Airport (20.5 miles)

  • Lowest 14 September, 2026

    52.3 °F

  • Average September

    73.7 °F

  • Highest 3 September, 2026

    93.6 °F

Climate (2021–2026)

Galesburg Municipal Airport (20.5 miles)

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  • Average Low 2021–2026

    41.9 °F

  • Average 2021–2026

    52.2 °F

  • Average High 2021–2026

    62.5 °F
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