Thames River - Harvard Boathouse Weather Forecast

    • 29
    • 48

    Increasing Clouds

    • 33
    • 53

    Mostly Cloudy

    • 44
    • 54

    Chance Rain Showers

    • 47
    • 59

    Rain Showers

    • 33
    • 56

    Chance Rain Showers

    • 37
    • 55

    Mostly Sunny

    • 41
    • 60

    Mostly Cloudy

Today 13 Mar Northern New London

Mostly sunny. Highs in the upper 40s. East Winds 5 to 10 Mph.

Tonight 13 Mar Northern New London

Partly cloudy this Evening, then becoming mostly cloudy. Lows in the upper 20s. East Winds 5 to 10 Mph, becoming north after midnight.

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Thames River - Harvard Boathouse Temperature Statistics

March Temperature

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

  • Lowest 3 March, 2025

    14.8 °F

  • Average March

    37 °F

  • Highest 10 March, 2025

    55.9 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    60.9 °F
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