Rocky Neck State Park Weather Forecast

    • 53
    • 70

    Chance Rain

    • 50
    • 66

    Mostly Cloudy

    • 49
    • 67

    Mostly Cloudy

    • 50
    • 67

    Mostly Cloudy

    • 50
    • 67

    Chance Rain Showers

    • 51
    • 68

    Chance Rain Showers

Today 21 Sep Southern New London

Mostly cloudy with a chance of rain this Morning, then mostly sunny this afternoon. Highs around 70. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.

Tonight 21 Sep Southern New London

Mostly cloudy. Lows in the lower 50s. Northeast Winds 10 to 15 Mph.

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Rocky Neck State Park Temperature Statistics

September Temperature

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

  • Lowest 15 September, 2026

    50 °F

  • Average September

    68 °F

  • Highest 4 September, 2026

    82 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    60.8 °F
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