Preston Weather Forecast

    • 23
    • 41

    Becoming Sunny

    • 37
    • 45

    Partly Sunny

    • 43
    • 59

    Chance Rain

    • 51
    • 63

    Slight Chance Rain

    • 39
    • 68

    Rain Likely

    • 33
    • 48

    Chance Rain/Snow

Today 28 Mar Northern New London

Partly sunny. Highs in the lower 40s. North Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming northwest with Gusts up to 30 Mph this afternoon.

Tonight 28 Mar Northern New London

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

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Preston Temperature Statistics

March Temperature

Groton / New London, Groton / New London Airport (13 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 (13 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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