Thames River - New London Weather Forecast

    • 34
    • 40

    Cloudy

    • 45
    • 47

    Chance Rain Showers

    • 38
    • 56

    Chance Rain Showers

    • 43
    • 56

    Mostly Sunny

    • 44
    • 58

    Chance Rain

    • 40
    • 53

    Chance Rain

    • 31
    • 46

    Chance Rain

Today 6 Mar Southern New London

Cloudy. Highs in the lower 40s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 6 Mar Southern New London

Cloudy. Lows in the lower 30s. Northeast Winds around 5 Mph.

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Thames River - New London Temperature Statistics

March Temperature

Groton / New London, Groton / New London Airport (3.1 miles)

  • Lowest 3 March, 2026

    12 °F

  • Average March

    29.6 °F

  • Highest 4 March, 2026

    45 °F

Climate (2021–Present)

Groton / New London, Groton / New London Airport (3.1 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    60.8 °F
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