Niantic River Mouth Weather Forecast

    • 30
    • 46

    Mostly Sunny

    • 29
    • 43

    Mostly Sunny

    • 28
    • 43

    Partly Sunny

    • 35
    • 52

    Chance Rain Showers

    • 27
    • 46

    Chance Snow

    • 27
    • 41

    Chance Rain

Today 27 Nov Southern New London

Sunny. Highs in the mid 40s. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 27 Nov Southern New London

Partly cloudy in the Evening, then clearing. Lows in the upper 20s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

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Niantic River Mouth Temperature Statistics

November Temperature

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

  • Lowest 23 November, 2025

    25 °F

  • Average November

    43.8 °F

  • Highest 5 November, 2025

    61 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    45.6 °F

  • Average 2020–2025

    53.5 °F

  • Average High 2020–2025

    61 °F
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