Thames River - Bartlett Point Weather Forecast

    • 67
    • 76

    Chance Rain Showers

    • 49
    • 81

    Partly Sunny

    • 52
    • 70

    Partly Sunny

    • 55
    • 68

    Rain Showers Likely

    • 51
    • 69

    Chance Rain Showers

    • 48
    • 62

    Mostly Cloudy

    • 49
    • 64

    Chance Rain Showers

Today 17 Sep Southern New London

Partly sunny with a 30 percent chance of Showers. Highs in the mid 60s.

Tonight 17 Sep Southern New London

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. Humid with Lows in the upper 60s. Southwest Winds 5 to 10 Mph. Chance of rain 50 percent.

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Thames River - Bartlett Point Temperature Statistics

September Temperature

Groton / New London, Groton / New London Airport (6.8 miles)

  • Lowest 15 September, 2026

    50 °F

  • Average September

    67.8 °F

  • Highest 4 September, 2026

    82 °F

Climate (2021–2026)

Groton / New London, Groton / New London Airport (6.8 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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