Mystic Weather Forecast

    • 37
    • 55

    Mostly Sunny

    • 44
    • 55

    Chance Rain Showers

    • 44
    • 55

    Chance Rain

    • 49
    • 60

    Rain

    • 45
    • 58

    Chance Rain Showers

    • 42
    • 56

    Partly Sunny

Today 27 Oct Southern New London

Sunny. Highs in the mid 50s. North Winds around 5 Mph.

Tonight 27 Oct Southern New London

Mostly clear. Patchy frost after midnight. Lows in the upper 30s. North Winds 5 to 10 Mph.

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Mystic Temperature Statistics

October Temperature

Groton / New London, Groton / New London Airport (4.3 miles)

  • Lowest 10 October, 2025

    33.1 °F

  • Average October

    53.9 °F

  • Highest 4 October, 2025

    71.1 °F

Climate (2020–Present)

Groton / New London, Groton / New London Airport (4.3 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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