Old Mystic Weather Forecast

    • 24
    • 41

    Becoming Sunny

    • 37
    • 44

    Partly Sunny

    • 43
    • 56

    Chance Rain

    • 49
    • 60

    Slight Chance Rain

    • 39
    • 64

    Rain Likely

    • 34
    • 47

    Chance Rain/Snow

Today 28 Mar Southern New London

Partly sunny. A slight chance of snow Showers this morning. Highs in the lower 40s. North Winds 5 to 10 Mph with Gusts up to 30 Mph. Chance of snow 20 percent.

Tonight 28 Mar Southern New London

Mostly clear. Lows in the mid 20s. Northwest Winds 5 to 10 Mph. Gusts up to 30 Mph in the evening.

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Old Mystic Temperature Statistics

March Temperature

Groton / New London, Groton / New London Airport (6.2 miles)

  • Lowest 3 March, 2026

    12 °F

  • Average March

    38.7 °F

  • Highest 9 March, 2026

    63 °F

Climate (2021–Present)

Groton / New London, Groton / New London Airport (6.2 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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