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

41°F

5°C

Humidity 79%
Wind Speed SE 7 mph
Barometer 30.01 in (1016.0 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 21 Mar 9:56 pm EDT
Extended Forecast for

Fishers Island NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. Southeast wind around 6 mph.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 45. Southeast wind 10 to 13 mph.

    High: 45 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Rain. Low around 37. Light and variable wind becoming north 5 to 10 mph in the evening. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 37 °F

    Rain

  • Monday

    Monday: A 50 percent chance of rain before 2pm. Cloudy, with a high near 41. North wind 13 to 15 mph.

    High: 41 °F

    Chance Rain

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 32. North wind 11 to 13 mph.

    Low: 32 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 36.

    Low: 36 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 38. Southeast wind around 6 mph.
Sunday
A 30 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 45. Southeast wind 10 to 13 mph.
Sunday Night
Rain. Low around 37. Light and variable wind becoming north 5 to 10 mph in the evening. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 50 percent chance of rain before 2pm. Cloudy, with a high near 41. North wind 13 to 15 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 32. North wind 11 to 13 mph.
Tuesday
Sunny, with a high near 41.
Tuesday Night
Increasing clouds, with a low around 36.
Wednesday
Partly sunny, with a high near 45.
Wednesday Night
Mostly cloudy, with a low around 37.
Thursday
A 30 percent chance of rain after 8am. Partly sunny, with a high near 46.
Thursday Night
Rain likely. Mostly cloudy, with a low around 41. Breezy. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 46. Breezy.
Friday Night
Partly cloudy, with a low around 30.
Saturday
Sunny, with a high near 39.
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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:
3:03 pm EDT Mar 21, 2026
Forecast Valid:
10pm EDT Mar 21, 2026-6pm EDT Mar 28, 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