Thames River - Cow Point Weather Forecast

    • 40
    • 50

    Rain Showers

    • 36
    • 55

    Increasing Clouds

    • 36
    • 53

    Rain Likely

    • 28
    • 46

    Chance Rain

    • 32
    • 46

    Partly Sunny

    • 29
    • 48

    Slight Chance Rain

    • 34
    • 50

    Chance Rain

Today 20 Mar Northern New London

Mostly sunny. Highs in the lower 50s. South Winds around 5 Mph, increasing to 10 to 15 Mph with Gusts up to 30 Mph this afternoon.

Tonight 20 Mar Northern New London

Showers early this Evening, then a slight chance of Showers after midnight. Patchy fog after midnight. Lows in the lower 40s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain near 100 percent.

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Thames River - Cow Point Temperature Statistics

March Temperature

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

  • Lowest 3 March, 2026

    12 °F

  • Average March

    37.5 °F

  • Highest 9 March, 2026

    63 °F

Climate (2021–Present)

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

    60.8 °F
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