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

32°F

0°C

Humidity 45%
Wind Speed SW 12 mph
Barometer 30.41 in (1029.5 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 18 Mar 5:56 pm EDT
Extended Forecast for

Fishers Island NY

  • Tonight

    Tonight: Mostly clear, with a low around 27. South wind 5 to 9 mph becoming calm after midnight.

    Low: 27 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 39. Southeast wind 5 to 8 mph.

    High: 39 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a steady temperature around 37. South wind around 6 mph.

    Low: 37 °F

    Mostly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 46. South wind 6 to 9 mph.

    High: 46 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Rain likely, mainly after 2am. Mostly cloudy, with a steady temperature around 42. South wind 11 to 14 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 42 °F

    Chance Rain
    then Rain
    Likely

  • Saturday

    Saturday: A 30 percent chance of rain before noon. Partly sunny, with a high near 49.

    High: 49 °F

    Chance Rain
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 27. South wind 5 to 9 mph becoming calm after midnight.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 39. Southeast wind 5 to 8 mph.
Thursday Night
Mostly cloudy, with a steady temperature around 37. South wind around 6 mph.
Friday
Increasing clouds, with a high near 46. South wind 6 to 9 mph.
Friday Night
Rain likely, mainly after 2am. Mostly cloudy, with a steady temperature around 42. South wind 11 to 14 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A 30 percent chance of rain before noon. Partly sunny, with a high near 49.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
Partly sunny, with a high near 50.
Sunday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 35.
Monday
Mostly sunny, with a high near 45. Breezy.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
Partly sunny, with a high near 45.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fishers Island NY
 41.27°N 72.01°W (Elev. 7 ft)
Last Update:
5:35 pm EDT Mar 18, 2026
Forecast Valid:
6pm EDT Mar 18, 2026-6pm EDT Mar 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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