Cohasset Harbor - White Head Weather Forecast

    • 42
    • 50

    Rain Likely

    • 29
    • 56

    Rain

    • 34
    • 41

    Mostly Cloudy

    • 24
    • 46

    Slight Chance Rain

    • 23
    • 32

    Partly Sunny

    • 30
    • 38

    Chance Rain/Snow

Today 18 Dec Eastern Plymouth

Sunny. Highs around 50. South Winds 5 to 10 Mph. Gusts up to 20 Mph in the afternoon.

Tonight 18 Dec Eastern Plymouth

Mostly cloudy. Patchy fog. Rain likely after midnight. Not as cool with Lows in the upper 30s. Temperature rising to around 50 after midnight. South Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 70 percent.

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Cohasset Harbor - White Head Temperature Statistics

December Temperature

Marshfield Airport (11.8 miles)

  • Lowest 5 December, 2025

    12.2 °F

  • Average December

    31 °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

    52.6 °F

  • Average High 2020–2025

    60.4 °F
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