Groton Weather Forecast

    • 61
    • 84

    Rain Showers Likely

    • 62
    • 84

    Rain Showers Likely

    • 58
    • 86

    Rain Showers Likely

    • 57
    • 81

    Mostly Sunny

    • 57
    • 82

    Partly Sunny

    • 54
    • 77

    Chance Rain Showers

Today 10 Jun Southern Grafton

Mostly cloudy. Patchy fog in the morning. Scattered Showers and Thunderstorms in the afternoon. Highs in the mid 80s. Light and variable Winds. Gusts up to 20 Mph in the afternoon. Chance of rain 50 percent.

Tonight 10 Jun Southern Grafton

Cloudy. Showers likely with scattered Thunderstorms in the Evening, then scattered Showers after midnight. Patchy fog. Visibility one quarter mile or less at Times. Lows in the lower 60s. South Winds around 10 Mph in the Evening, becoming light and variable. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

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Groton Temperature Statistics

June Temperature

Plymouth Municipal Airport (6.2 miles)

  • Lowest 2 June, 2026

    36 °F

  • Average June

    62.1 °F

  • Highest 4 June, 2026

    85.3 °F

Climate (2021–Present)

Plymouth Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    36.2 °F

  • Average 2021–2026

    46.3 °F

  • Average High 2021–2026

    56.8 °F
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