Thames River - Smith Cove Weather Forecast

    • 42
    • 51

    Rain Showers

    • 26
    • 56

    Slight Chance Rain Showers

    • 32
    • 42

    Mostly Cloudy

    • 21
    • 47

    Partly Sunny

    • 21
    • 32

    Partly Sunny

Today 18 Dec Southern New London

Sunny. Highs in the lower 50s. Northwest Winds around 5 Mph, becoming east this Morning, then becoming southeast this afternoon.

Tonight 18 Dec Southern New London

Mostly cloudy. A slight chance of Showers in the Evening, then Showers after midnight. Breezy and not as cool with Lows in the lower 40s. Southeast Winds 5 to 10 Mph with Gusts up to 25 Mph, increasing to south 20 to 25 Mph with Gusts up to 40 Mph after midnight. Chance of rain 90 percent.

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Thames River - Smith Cove Temperature Statistics

December Temperature

Groton / New London, Groton / New London Airport (5.6 miles)

  • Lowest 5 December, 2025

    12.9 °F

  • Average December

    31.2 °F

  • Highest 10 December, 2025

    48.9 °F

Climate (2020–Present)

Groton / New London, Groton / New London Airport (5.6 miles)

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    61 °F
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