Mystic Harbor - Spence Point Weather Forecast

    • 58
    • 71

    Chance Rain

    • 63
    • 80

    Mostly Sunny

    • 65
    • 80

    Mostly Sunny

    • 66
    • 77

    Rain Showers Likely

    • 61
    • 75

    Chance Rain Showers

    • 56
    • 76

    Mostly Sunny

Today 21 Aug Southern New London

Mostly cloudy. A chance of Showers this morning. Highs in the lower 70s. Northeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 30 percent.

Tonight 21 Aug Southern New London

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 50s. Northeast Winds 10 to 15 Mph with Gusts up to 30 Mph.

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Mystic Harbor - Spence Point Temperature Statistics

August Temperature

Groton / New London, Groton / New London Airport (3.7 miles)

  • Lowest 2 August, 2025

    57 °F

  • Average August

    73.6 °F

  • Highest 8 August, 2025

    95.6 °F

Climate (2020–Present)

Groton / New London, Groton / New London Airport (3.7 miles)

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  • Average Low 2020–2025

    45.7 °F

  • Average 2020–2025

    53.6 °F

  • Average High 2020–2025

    61.2 °F
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