Thames River - Harvard Boathouse Weather Forecast

    • 32
    • 57

    Sunny

    • 40
    • 61

    Mostly Sunny

    • 46
    • 67

    Partly Sunny

    • 48
    • 68

    Partly Sunny

    • 52
    • 68

    Mostly Cloudy

    • 55
    • 69

    Rain Showers Likely

Today 31 Oct Northern New London

Areas of frost early. Sunny. Highs in the mid 50s. Northwest Winds 5 to 10 Mph.

Tonight 31 Oct Northern New London

Clear. Areas of frost in the Evening, then widespread frost after midnight. Cold with Lows around 30. Northwest Winds around 5 Mph.

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Thames River - Harvard Boathouse Temperature Statistics

October Temperature

Groton / New London, Groton / New London Airport (6.2 miles)

  • Lowest 18 October, 2026

    32 °F

  • Average October

    54.8 °F

  • Highest 14 October, 2026

    75 °F

Climate (2021–2026)

Groton / New London, Groton / New London Airport (6.2 miles)

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  • Average Low 2021–2026

    45.1 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    60.7 °F
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