Sunbeam Weather Forecast

    • 49
    • 62

    Mostly Sunny

    • 54
    • 78

    Slight Chance Thunderstorms

    • 58
    • 79

    Mostly Sunny

    • 56
    • 80

    Rain Showers

    • 46
    • 69

    Chance Rain Showers

    • 44
    • 66

    Slight Chance Rain Showers

Today 20 Apr Mercer

Widespread frost after midnight. Sunny. Highs in the lower 60s. Northeast Winds around 5 Mph, becoming south with Gusts up to 20 Mph this afternoon.

Tonight 20 Apr Mercer

Mostly clear in the Evening, then becoming partly cloudy. Not as cool with Lows in the upper 40s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sunbeam Temperature Statistics

April Temperature

Galesburg Municipal Airport (20.5 miles)

  • Lowest 5 April, 2026

    32.9 °F

  • Average April

    54.9 °F

  • Highest 17 April, 2026

    82.8 °F

Climate (2021–Present)

Galesburg Municipal Airport (20.5 miles)

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  • Average Low 2021–2026

    41.6 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    62.3 °F
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