Groton Weather Forecast

    • 22
    • 40

    Snow Showers

    • 28
    • 46

    Partly Sunny

    • 32
    • 46

    Mostly Cloudy

    • 32
    • 52

    Partly Sunny

    • 32
    • 53

    Partly Sunny

    • 35
    • 56

    Chance Rain Showers

Today 20 Apr Southern Grafton

Mostly cloudy with isolated rain and snow Showers. Highs around 40. Northwest Winds around 10 Mph with Gusts up to 20 Mph. Chance of precipitation 20 percent.

Tonight 20 Apr Southern Grafton

Mostly clear. Lows in the lower 20s. Northwest Winds around 10 Mph with Gusts up to 20 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Groton Temperature Statistics

April Temperature

Plymouth Municipal Airport (6.2 miles)

  • Lowest 8 April, 2026

    20.8 °F

  • Average April

    44.8 °F

  • Highest 17 April, 2026

    73.9 °F

Climate (2021–Present)

Plymouth Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    36.3 °F

  • Average 2021–2026

    46.4 °F

  • Average High 2021–2026

    57 °F
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