Mystic Harbor - Spence Point Weather Forecast

    • 67
    • 76

    Rain Showers

    • 66
    • 75

    Rain Showers

    • 63
    • 74

    Rain Showers Likely

    • 65
    • 77

    Chance Rain Showers

    • 67
    • 79

    Partly Sunny

    • 68
    • 80

    Chance Rain Showers

Today 28 Jul Southern New London

Mostly cloudy. A chance of Showers and Thunderstorms. Some Thunderstorms may produce heavy rainfall in the morning. Humid with Highs in the upper 70s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

Tonight 28 Jul Southern New London

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then Showers likely with a chance of Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall after midnight. Humid with Lows in the upper 60s. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

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Mystic Harbor - Spence Point Temperature Statistics

July Temperature

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

  • Lowest 20 July, 2026

    57 °F

  • Average July

    72.2 °F

  • Highest 3 July, 2026

    91 °F

Climate (2021–2026)

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