Thames River - Harvard Boathouse Weather Forecast

    • 59
    • 76

    Increasing Clouds

    • 65
    • 77

    Chance Rain Showers

    • 62
    • 81

    Mostly Sunny

    • 59
    • 78

    Sunny

    • 61
    • 79

    Rain Showers Likely

    • 61
    • 76

    Rain Showers

    • 61
    • 80

    Mostly Sunny

Today 17 Jun Northern New London

Sunny. Highs in the upper 70s. South Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 17 Jun Northern New London

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 50s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Thames River - Harvard Boathouse Temperature Statistics

June Temperature

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

  • Lowest 2 June, 2026

    42.1 °F

  • Average June

    65.9 °F

  • Highest 11 June, 2026

    87.1 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    60.7 °F
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