West Harbor Weather Forecast

    • 21
    • 34

    Breezy

    • 18
    • 25

    Mostly Sunny

    • 33
    • 39

    Mostly Cloudy

    • 23
    • 39

    Chance Rain

    • 21
    • 30

    Partly Sunny

    • 15
    • 28

    Chance Snow

Today 19 Jan Northeast Suffolk

Mostly sunny. Highs in the lower 30s. West Winds 15 to 20 Mph. Gusts up to 30 Mph this afternoon.

Tonight 19 Jan Northeast Suffolk

Partly cloudy in the Evening, then clearing. A chance of light freezing spray after midnight. Lows around 20. West Winds 15 to 20 Mph with Gusts up to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

West Harbor Temperature Statistics

January Temperature

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

  • Lowest 1 January, 2026

    16 °F

  • Average January

    33.7 °F

  • Highest 8 January, 2026

    50 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    45.4 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    60.9 °F
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