Cohasset Weather Forecast

    • 60
    • 69

    Rain Showers Likely

    • 64
    • 77

    Partly Sunny

    • 67
    • 82

    Mostly Cloudy

    • 68
    • 83

    Chance Rain Showers

    • 65
    • 83

    Chance Rain Showers

    • 65
    • 83

    Mostly Sunny

    • 67
    • 84

    Mostly Sunny

Today 30 Jul Eastern Plymouth

Showers likely with a chance of Thunderstorms. Patchy fog. Near steady temperature in the upper 60s. North Winds 10 to 15 Mph. Chance of rain 70 percent.

Tonight 30 Jul Eastern Plymouth

Mostly cloudy. A slight chance of Showers this evening. Patchy fog this evening. Lows in the upper 50s. North Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming northwest after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cohasset Temperature Statistics

July Temperature

Marshfield Airport (11.8 miles)

  • Lowest 25 July, 2026

    53.6 °F

  • Average July

    73.1 °F

  • Highest 2 July, 2026

    100.4 °F

Climate (2021–2026)

Marshfield Airport (11.8 miles)

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  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    60.2 °F
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