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

69°F

21°C

Humidity 87%
Wind Speed S 3 mph
Barometer 30.06 in (1018.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 26 Aug 8:56 pm EDT
Extended Forecast for

Fishers Island NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 69. Southwest wind 6 to 8 mph.

    Low: 69 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 75. South wind 8 to 15 mph.

    High: 75 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 5am, then a chance of showers. Mostly cloudy, with a low around 70. South wind 6 to 11 mph. Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 76. Southwest wind 3 to 7 mph. Chance of precipitation is 20%.

    High: 76 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 66. West wind 5 to 9 mph becoming north after midnight.

    Low: 66 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 69. Southwest wind 6 to 8 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 75. South wind 8 to 15 mph.
Thursday Night
Showers and thunderstorms likely before 5am, then a chance of showers. Mostly cloudy, with a low around 70. South wind 6 to 11 mph. Chance of precipitation is 60%.
Friday
A slight chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 76. Southwest wind 3 to 7 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 66. West wind 5 to 9 mph becoming north after midnight.
Saturday
Sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 70.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 69.
Tuesday
Partly sunny, with a high near 75.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 69.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 75.
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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:
2:53 pm EDT Aug 26, 2026
Forecast Valid:
9pm EDT Aug 26, 2026-6pm EDT Sep 2, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation