Fishers Island Weather Forecast

    • 29
    • 48

    Rain

    • 28
    • 31

    Windy

    • 25
    • 36

    Mostly Cloudy

    • 22
    • 30

    Chance Snow

    • 26
    • 31

    Partly Sunny

    • 29
    • 36

    Partly Sunny

Today 29 Dec Northeast Suffolk

Rain, breezy and not as cool with Highs in the lower 50s. Southwest Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of rain near 100 percent.

Tonight 29 Dec Northeast Suffolk

Mostly clear in the Evening, then becoming mostly cloudy. Windy with Lows in the upper 20s. West Winds 20 to 30 Mph with Gusts up to 45 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fishers Island Temperature Statistics

December Temperature

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

  • Lowest 5 December, 2025

    12.9 °F

  • Average December

    33 °F

  • Highest 19 December, 2025

    55 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    61 °F
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