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.

Mostly Cloudy

40°F

4°C

Humidity 97%
Wind Speed Calm
Barometer 30.00 in (1016.0 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 11 Mar 4:56 am EDT
Extended Forecast for

Fishers Island NY

  • Today

    Today: A 20 percent chance of showers after 2pm. Increasing clouds, with a high near 57. East wind 6 to 11 mph.

    High: 57 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 5am. Areas of fog before 4am. Otherwise, mostly cloudy, with a low around 42. Breezy, with a south wind 16 to 20 mph.

    Low: 42 °F

    Chance
    Showers and
    Areas Fog

  • Thursday

    Thursday: A chance of rain showers before 2pm, then a chance of rain and snow showers. Patchy fog between 8am and 11am. Otherwise, mostly cloudy, with a temperature rising to near 49 by 10am, then falling to around 39 during the remainder of the day. Breezy, with a northwest wind 17 to 20 mph. Chance of precipitation is 50%.

    High: 49 °F⇓

    Chance
    Showers and
    Patchy Fog
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Wind chill values between 20 and 25. Northwest wind around 15 mph.

    Low: 30 °F

    Gradual
    Clearing

  • Friday

    Friday: Increasing clouds, with a high near 43. West wind 9 to 18 mph becoming south in the afternoon.

    High: 43 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A 30 percent chance of showers before 2am. Mostly cloudy, with a steady temperature around 40. Breezy.

    Low: 40 °F

    Chance
    Showers and
    Breezy

  • Saturday

    Saturday: Sunny, with a high near 44. Breezy.

    High: 44 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 44.

    High: 44 °F

    Cloudy

Detailed Forecast

Today
A 20 percent chance of showers after 2pm. Increasing clouds, with a high near 57. East wind 6 to 11 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 5am. Areas of fog before 4am. Otherwise, mostly cloudy, with a low around 42. Breezy, with a south wind 16 to 20 mph.
Thursday
A chance of rain showers before 2pm, then a chance of rain and snow showers. Patchy fog between 8am and 11am. Otherwise, mostly cloudy, with a temperature rising to near 49 by 10am, then falling to around 39 during the remainder of the day. Breezy, with a northwest wind 17 to 20 mph. Chance of precipitation is 50%.
Thursday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Wind chill values between 20 and 25. Northwest wind around 15 mph.
Friday
Increasing clouds, with a high near 43. West wind 9 to 18 mph becoming south in the afternoon.
Friday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a steady temperature around 40. Breezy.
Saturday
Sunny, with a high near 44. Breezy.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Cloudy, with a high near 44.
Sunday Night
Rain, mainly after 2am. Low around 41. Windy. Chance of precipitation is 80%.
Monday
Rain. High near 51. Windy. Chance of precipitation is 90%.
Monday Night
Rain likely. Mostly cloudy, with a low around 33. Breezy. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 38.
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:
3:05 am EDT Mar 11, 2026
Forecast Valid:
5am EDT Mar 11, 2026-6pm EDT Mar 17, 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