Groton Weather Forecast

    • 60
    • 74

    Mostly Sunny

    • 62
    • 74

    Mostly Sunny

    • 64
    • 77

    Mostly Sunny

    • 66
    • 77

    Mostly Cloudy

    • 66
    • 75

    Mostly Cloudy

    • 66
    • 74

    Mostly Cloudy

Today 2 Aug Southern New London

Sunny. Highs in the upper 70s. North Winds around 5 Mph, becoming southwest in the afternoon.

Tonight 2 Aug Southern New London

Mostly clear. Lows in the upper 50s. North Winds around 5 Mph.

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Groton Temperature Statistics

August Temperature

Groton / New London, Groton / New London Airport (1.9 miles)

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Climate (2020–Present)

Groton / New London, Groton / New London Airport (1.9 miles)

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  • Average Low 2020–2025

    45.8 °F

  • Average 2020–2025

    53.6 °F

  • Average High 2020–2025

    61.1 °F
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