Lyddy Island Weather Forecast

    • 63
    • 72

    Mostly Sunny

    • 57
    • 77

    Mostly Sunny

    • 55
    • 66

    Mostly Sunny

    • 55
    • 65

    Partly Sunny

    • 62
    • 68

    Partly Sunny

    • 64
    • 73

    Slight Chance Rain Showers

Today 18 Sep Southern New London

Patchy fog this morning. Mostly cloudy with a slight chance of Showers this Morning, then mostly sunny this afternoon. Highs in the upper 70s. North Winds around 5 Mph, becoming west this afternoon. Chance of rain 20 percent.

Tonight 18 Sep Southern New London

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

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Lyddy Island Temperature Statistics

September Temperature

Groton / New London, Groton / New London Airport (5 miles)

  • Lowest 9 September, 2025

    48 °F

  • Average September

    61.9 °F

  • Highest 6 September, 2025

    75.9 °F

Climate (2020–Present)

Groton / New London, Groton / New London Airport (5 miles)

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  • Average Low 2020–2025

    45.7 °F

  • Average 2020–2025

    53.6 °F

  • Average High 2020–2025

    61.1 °F
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