Groton Weather Forecast

    • 34
    • 40

    Increasing Clouds

    • 42
    • 46

    Rain Likely

    • 38
    • 51

    Mostly Cloudy

    • 42
    • 50

    Rain Likely

    • 31
    • 50

    Slight Chance Rain/Snow

    • 33
    • 42

    Partly Sunny

Today 19 Mar Southern New London

Sunny. Highs in the lower 40s. Southeast Winds 5 to 10 Mph.

Tonight 19 Mar Southern New London

Partly cloudy. Lows around 30. Southwest Winds around 5 Mph.

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Groton Temperature Statistics

March Temperature

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

  • Lowest 3 March, 2026

    12 °F

  • Average March

    38.1 °F

  • Highest 9 March, 2026

    63 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    60.8 °F
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