Groton Weather Forecast

    • 23
    • 40

    Mostly Cloudy

    • 33
    • 49

    Partly Sunny

    • 44
    • 53

    Chance Rain

    • 46
    • 59

    Rain

    • 28
    • 51

    Chance Rain Showers

    • 34
    • 53

    Partly Sunny

Today 13 Mar Southern Grafton

Mostly cloudy. Highs around 40. Southeast Winds around 10 Mph.

Tonight 13 Mar Southern Grafton

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 20s. Southeast Winds around 10 Mph in the Evening, becoming light and variable.

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Groton Temperature Statistics

March Temperature

Plymouth Municipal Airport (6.2 miles)

  • Lowest 3 March, 2025

    4.8 °F

  • Average March

    27.8 °F

  • Highest 10 March, 2025

    51.6 °F

Climate (2020–Present)

Plymouth Municipal Airport (6.2 miles)

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  • Average Low 2020–2025

    36.7 °F

  • Average 2020–2025

    46.7 °F

  • Average High 2020–2025

    57.1 °F
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