National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

73°F

23°C

Humidity 76%
Wind Speed W 10 mph
Barometer 29.77 in (1008.1 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 14 Oct 3:56 pm EDT
Extended Forecast for

Fishers Island NY

  • Tonight

    Tonight: Mostly clear, with a low around 55. Northwest wind 10 to 15 mph.

    Low: 55 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 61. North wind 5 to 13 mph.

    High: 61 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly after 5am. Increasing clouds, with a low around 55. Southeast wind 6 to 14 mph.

    Low: 55 °F

    Mostly Clear
    then Chance
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 5pm. High near 67. Southeast wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 67 °F

    Showers

  • Friday Night

    Friday Night: Showers and thunderstorms. Low around 50. Breezy, with a southwest wind 20 to 22 mph becoming northwest after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Showers and
    Breezy

  • Saturday

    Saturday: A 30 percent chance of showers before 8am. Partly sunny, with a high near 53. Breezy.

    High: 53 °F

    Breezy.
    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 55. Northwest wind 10 to 15 mph.
Thursday
Sunny, with a high near 61. North wind 5 to 13 mph.
Thursday Night
A 30 percent chance of showers, mainly after 5am. Increasing clouds, with a low around 55. Southeast wind 6 to 14 mph.
Friday
Showers, with thunderstorms also possible after 5pm. High near 67. Southeast wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms. Low around 50. Breezy, with a southwest wind 20 to 22 mph becoming northwest after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 53. Breezy.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 49.
Monday
Sunny, with a high near 60.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fishers Island NY
 41.26°N 71.98°W (Elev. 0 ft)
Last Update:
2:21 pm EDT Oct 14, 2026
Forecast Valid:
4pm EDT Oct 14, 2026-6pm EDT Oct 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation