Sunbeam Weather Forecast

    • 30
    • 60

    Becoming Sunny

    • 35
    • 53

    Partly Sunny

    • 43
    • 62

    Mostly Cloudy

    • 48
    • 65

    Slight Chance Rain

    • 35
    • 71

    Mostly Cloudy

    • 30
    • 51

    Partly Sunny

Today 22 Mar Mercer

Partly sunny after Midnight, then mostly cloudy with a slight chance of rain this afternoon. Breezy and much cooler with Highs around 60. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming north 15 to 25 Mph with Gusts up to 35 Mph. Chance of rain 20 percent.

Tonight 22 Mar Mercer

Partly cloudy in the Evening, then becoming mostly clear. Much cooler with Lows around 30. North Winds 15 to 20 Mph, Diminishing to 5 to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sunbeam Temperature Statistics

March Temperature

Galesburg Municipal Airport (20.5 miles)

  • Lowest 16 March, 2026

    13.1 °F

  • Average March

    43.9 °F

  • Highest 10 March, 2026

    81.7 °F

Climate (2021–Present)

Galesburg Municipal Airport (20.5 miles)

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  • Average Low 2021–2026

    41.5 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    62.1 °F
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