Rocky Neck State Park Weather Forecast

    • 14
    • 30

    Decreasing Clouds

    • 32
    • 38

    Chance Rain/Snow

    • 32
    • 49

    Rain Likely

    • 24
    • 42

    Partly Sunny

    • 25
    • 37

    Chance Snow

    • 21
    • 38

    Chance Snow

    • 17
    • 33

    Partly Sunny

Today 8 Dec Southern New London

Partly sunny. Cold with Highs in the upper 20s. North Winds 10 to 15 Mph.

Tonight 8 Dec Southern New London

Partly cloudy. Lows around 13. North Winds 5 to 10 Mph. Gusts up to 20 Mph this evening.

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Rocky Neck State Park Temperature Statistics

December Temperature

Groton / New London, Groton / New London Airport (9.9 miles)

  • Lowest 5 December, 2025

    12.9 °F

  • Average December

    32.3 °F

  • Highest 2 December, 2025

    48 °F

Climate (2020–Present)

Groton / New London, Groton / New London Airport (9.9 miles)

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    61 °F
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