Thames River - Mamacoke Cove Weather Forecast

    • 51
    • 69

    Rain

    • 51
    • 74

    Partly Sunny

    • 53
    • 75

    Partly Sunny

    • 53
    • 71

    Slight Chance Rain Showers

    • 53
    • 79

    Mostly Sunny

    • 47
    • 73

    Mostly Sunny

Today 7 Sep Southern New London

Rain. Highs in the upper 60s. North Winds 5 to 10 Mph. Chance of rain 90 percent.

Tonight 7 Sep Southern New London

Mostly cloudy with a slight chance of rain in the Evening, then partly cloudy after midnight. Lows in the lower 50s. Northwest Winds around 5 Mph. Chance of rain 20 percent.

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Thames River - Mamacoke Cove Temperature Statistics

September Temperature

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

  • Lowest 3 September, 2025

    50 °F

  • Average September

    62.1 °F

  • Highest 5 September, 2025

    73 °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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