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 70%
Wind Speed SW 13 mph
Barometer 29.81 in (1009.6 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 17 Apr 1:56 pm EDT
Extended Forecast for

Fishers Island NY

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms. Mostly cloudy, with a steady temperature around 58. South wind around 8 mph. Chance of precipitation is 50%.

    High: 58 °F

    Scattered
    T-storms

  • Tonight

    Tonight: Scattered showers before 8pm. Partly cloudy, with a low around 49. Northeast wind 6 to 9 mph. Chance of precipitation is 30%.

    Low: 49 °F

    Scattered
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a steady temperature around 51. East wind 8 to 10 mph.

    High: 51 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 46. East wind 6 to 8 mph.

    Low: 46 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Showers, mainly after 8am. High near 52. Southeast wind 9 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before 8pm. Low around 39. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Showers then
    Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Mostly cloudy, with a steady temperature around 58. South wind around 8 mph. Chance of precipitation is 50%.
Tonight
Scattered showers before 8pm. Partly cloudy, with a low around 49. Northeast wind 6 to 9 mph. Chance of precipitation is 30%.
Saturday
Partly sunny, with a steady temperature around 51. East wind 8 to 10 mph.
Saturday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 46. East wind 6 to 8 mph.
Sunday
Showers, mainly after 8am. High near 52. Southeast wind 9 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers, mainly before 8pm. Low around 39. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Sunny, with a high near 47.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 46.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Partly sunny, with a high near 56.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Mostly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fishers Island NY
 41.27°N 72.01°W (Elev. 7 ft)
Last Update:
12:33 pm EDT Apr 17, 2026
Forecast Valid:
2pm EDT Apr 17, 2026-6pm EDT Apr 23, 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