Sunbeam Weather Forecast

    • 5
    • 26

    Gradual Clearing

    • 18
    • 26

    Mostly Cloudy

    • 27
    • 41

    Mostly Cloudy

    • 17
    • 36

    Chance Snow

    • 7
    • 27

    Chance Snow

    • -3
    • 15

    Mostly Cloudy

Today 7 Dec Mercer

Mostly cloudy in the Morning, then clearing. Highs in the mid 20s. Temperature falling to around 17 in the afternoon. North Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 7 Dec Mercer

Partly cloudy in the Evening, then becoming mostly cloudy. Much Colder with Lows around 5 above. Northeast Winds 5 to 10 Mph. Wind chill Values as low as 4 below.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sunbeam Temperature Statistics

December Temperature

Galesburg Municipal Airport (20.5 miles)

  • Lowest 4 December, 2025

    -3.5 °F

  • Average December

    18.1 °F

  • Highest 3 December, 2025

    33.1 °F

Climate (2020–Present)

Galesburg Municipal Airport (20.5 miles)

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  • Average Low 2020–2025

    41.4 °F

  • Average 2020–2025

    51.6 °F

  • Average High 2020–2025

    61.7 °F
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