Thames River - Bartlett Point Weather Forecast

    • 48
    • 66

    Partly Sunny

    • 49
    • 67

    Increasing Clouds

    • 52
    • 65

    Rain Showers Likely

    • 53
    • 64

    Rain Showers

    • 53
    • 64

    Rain Showers Likely

    • 51
    • 66

    Mostly Cloudy

    • 52
    • 71

    Partly Sunny

Today 23 Sep Southern New London

Mostly sunny. Highs around 70.

Tonight 23 Sep Southern New London

Partly cloudy this Evening, then clearing. Lows in the upper 40s. Northeast Winds 15 to 20 Mph with Gusts up to 30 Mph.

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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

    67.2 °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

    60.7 °F
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