Sunbeam Weather Forecast

    • 56
    • 79

    Increasing Clouds

    • 59
    • 80

    Partly Sunny

    • 66
    • 81

    Partly Sunny

    • 64
    • 85

    Slight Chance Thunderstorms

    • 62
    • 82

    Mostly Sunny

    • 63
    • 82

    Partly Sunny

Today 23 Aug Mercer

Sunny. Highs in the upper 70s. Northwest Winds 5 to 10 Mph.

Tonight 23 Aug Mercer

Partly cloudy. Lows in the upper 50s. North Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sunbeam Temperature Statistics

August Temperature

Galesburg Municipal Airport (20.5 miles)

  • Lowest 3 August, 2026

    57.7 °F

  • Average August

    73.4 °F

  • Highest 10 August, 2026

    88.2 °F

Climate (2021–2026)

Galesburg Municipal Airport (20.5 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    62.5 °F
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