Cohasset Weather Forecast

    • 39
    • 59

    Rain

    • 24
    • 47

    Partly Sunny

    • 29
    • 37

    Partly Sunny

    • 32
    • 43

    Mostly Cloudy

    • 32
    • 49

    Chance Rain/Snow

    • 30
    • 45

    Chance Rain/Snow

Today 16 Mar Eastern Plymouth

Rain likely with a chance of Thunderstorms. Patchy fog. Some Thunderstorms may produce heavy rainfall. Not as cool. Near steady temperature in the upper 50s. South Winds 15 to 20 Mph with Gusts up to 40 Mph. Chance of rain 70 percent.

Tonight 16 Mar Eastern Plymouth

Rain with a slight chance of Thunderstorms in the Evening, then rain after midnight. Patchy fog. Some Thunderstorms may produce heavy rainfall in the evening. Breezy with Lows in the upper 30s. South Winds 15 to 25 Mph. Gusts up to 50 Mph, increasing to 65 Mph after midnight. Chance of rain 90 percent.

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Cohasset Temperature Statistics

March Temperature

Marshfield Airport (11.8 miles)

  • Lowest 3 March, 2026

    12.2 °F

  • Average March

    40.2 °F

  • Highest 10 March, 2026

    73.4 °F

Climate (2021–Present)

Marshfield Airport (11.8 miles)

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  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    60.3 °F
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