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.

Overcast

45°F

7°C

Humidity 86%
Wind Speed S 7 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 26 Mar 4:56 am EDT
Extended Forecast for

Fishers Island NY

  • Overnight

    Overnight: A 20 percent chance of rain. Cloudy, with a steady temperature around 46. South wind around 11 mph.

    Low: 46 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A slight chance of rain before 8am, then a chance of showers after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 49. Southwest wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 49 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Showers. Low around 45. Breezy, with a southwest wind 17 to 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Showers and
    Breezy

  • Friday

    Friday: Showers likely, mainly before 8am. Cloudy, with a high near 48. North wind 10 to 14 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A slight chance of rain after 8pm, mixing with snow after 2am. Mostly cloudy, with a low around 31. Northeast wind 7 to 10 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of rain. Cloudy, with a steady temperature around 46. South wind around 11 mph.
Thursday
A slight chance of rain before 8am, then a chance of showers after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 49. Southwest wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Thursday Night
Showers. Low around 45. Breezy, with a southwest wind 17 to 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers likely, mainly before 8am. Cloudy, with a high near 48. North wind 10 to 14 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of rain after 8pm, mixing with snow after 2am. Mostly cloudy, with a low around 31. Northeast wind 7 to 10 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 38.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 42.
Sunday Night
Mostly cloudy, with a low around 38.
Monday
Mostly cloudy, with a high near 48. Breezy.
Monday Night
Mostly cloudy, with a low around 44. Breezy.
Tuesday
A 40 percent chance of rain. Partly sunny, with a high near 49.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 41.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 47.
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:
5:42 am EDT Mar 26, 2026
Forecast Valid:
5am EDT Mar 26, 2026-6pm EDT Apr 1, 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