Fishers Island Weather Forecast

    • 40
    • 52

    Rain Showers

    • 39
    • 47

    Slight Chance Rain

    • 30
    • 46

    Chance Rain

    • 36
    • 41

    Mostly Sunny

    • 43
    • 47

    Partly Sunny

    • 44
    • 53

    Partly Sunny

Today 5 Apr Northeast Suffolk

Areas of dense fog in the morning. A chance of Showers with Areas of heavy drizzle in the Morning, then Showers in the afternoon. Visibility one quarter mile or less at Times in the morning. Highs in the upper 50s. Southwest Winds 15 to 20 Mph. Chance of rain near 100 percent.

Tonight 5 Apr Northeast Suffolk

Cloudy with Showers in the Evening, then partly cloudy after midnight. Lows in the upper 30s. West Winds 10 to 15 Mph, becoming northwest after midnight. Chance of rain 90 percent.

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Fishers Island Temperature Statistics

April Temperature

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

  • Lowest 2 April, 2026

    39 °F

  • Average April

    46.7 °F

  • Highest 1 April, 2026

    60.1 °F

Climate (2021–Present)

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