Sunbeam Weather Forecast

    • 68
    • 86

    Chance Thunderstorms

    • 65
    • 84

    Rain Showers

    • 49
    • 76

    Chance Rain Showers

    • 46
    • 66

    Partly Sunny

    • 49
    • 69

    Mostly Cloudy

    • 53
    • 75

    Mostly Cloudy

Today 17 May Mercer

Mostly cloudy with Showers and Thunderstorms likely Early, then mostly cloudy with a chance of Showers and Thunderstorms this morning. Partly sunny this afternoon. Humid with Highs in the mid 80s. Southeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

Tonight 17 May Mercer

Mostly clear in the Evening, then partly cloudy with a chance of Showers and Thunderstorms after midnight. Lows in the upper 60s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sunbeam Temperature Statistics

May Temperature

Galesburg Municipal Airport (20.5 miles)

  • Lowest 7 May, 2026

    32.7 °F

  • Average May

    55.3 °F

  • Highest 12 May, 2026

    81.3 °F

Climate (2021–Present)

Galesburg Municipal Airport (20.5 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    62.3 °F
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