Thames River - Green Harbor Weather Forecast

    • 44
    • 66

    Mostly Sunny

    • 50
    • 56

    Chance Rain Showers

    • 56
    • 63

    Chance Rain Showers

    • 54
    • 62

    Rain Showers Likely

    • 48
    • 59

    Slight Chance Rain Showers

    • 48
    • 57

    Chance Rain Showers

    • 53
    • 60

    Slight Chance Rain Showers

Today 30 Apr Southern New London

Sunny. Highs in the upper 60s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 30 Apr Southern New London

Mostly clear. Lows in the mid 40s. North Winds 5 to 10 Mph.

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Thames River - Green Harbor Temperature Statistics

April Temperature

Groton / New London, Groton / New London Airport (2.5 miles)

  • Lowest 10 April, 2025

    27.8 °F

  • Average April

    49.4 °F

  • Highest 28 April, 2025

    73.9 °F

Climate (2020–Present)

Groton / New London, Groton / New London Airport (2.5 miles)

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  • Average Low 2020–2025

    45.6 °F

  • Average 2020–2025

    53.5 °F

  • Average High 2020–2025

    61.1 °F
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