Cohasset Weather Forecast

    • 27
    • 41

    Snow

    • 16
    • 33

    Snow

    • 21
    • 29

    Partly Sunny

    • 24
    • 34

    Partly Sunny

    • 29
    • 46

    Mostly Cloudy

    • 39
    • 52

    Chance Rain Showers

Today 13 Dec Eastern Plymouth

Partly sunny. Highs in the lower 40s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 13 Dec Eastern Plymouth

A chance of snow in the Evening, then snow after midnight. Snow accumulation around an inch. Lows in the mid 20s. West Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening. Chance of snow near 100 percent.

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Cohasset Temperature Statistics

December Temperature

Marshfield Airport (11.8 miles)

  • Lowest 5 December, 2025

    12.2 °F

  • Average December

    32.4 °F

  • Highest 10 December, 2025

    50 °F

Climate (2020–Present)

Marshfield Airport (11.8 miles)

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  • Average Low 2020–2025

    44.4 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    60.5 °F
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