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.

Partly Cloudy

65°F

18°C

Humidity 73%
Wind Speed SW 10 mph
Barometer 29.92 in (1013.2 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 15 Apr 11:56 am EDT
Extended Forecast for

Fishers Island NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a steady temperature around 57. South wind 7 to 10 mph.

    High: 57 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 49. South wind 6 to 10 mph becoming west in the evening. Chance of precipitation is 50%.

    Low: 49 °F

    Chance
    T-storms

  • Thursday

    Thursday: Partly sunny, with a high near 62. South wind 7 to 11 mph.

    High: 62 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 51. Southwest wind 7 to 10 mph.

    Low: 51 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 62. Southwest wind 6 to 8 mph. Chance of precipitation is 40%.

    High: 62 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers after 8am. Mostly cloudy, with a high near 54.

    High: 54 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a steady temperature around 57. South wind 7 to 10 mph.
Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 49. South wind 6 to 10 mph becoming west in the evening. Chance of precipitation is 50%.
Thursday
Partly sunny, with a high near 62. South wind 7 to 11 mph.
Thursday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 51. Southwest wind 7 to 10 mph.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 62. Southwest wind 6 to 8 mph. Chance of precipitation is 40%.
Friday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 50.
Saturday
Partly sunny, with a high near 54.
Saturday Night
Mostly cloudy, with a low around 47.
Sunday
A 50 percent chance of showers after 8am. Mostly cloudy, with a high near 54.
Sunday Night
A chance of rain showers before 5am, then a chance of rain and snow showers. Mostly cloudy, with a low around 41. Breezy. Chance of precipitation is 50%.
Monday
A 30 percent chance of snow showers. Mostly sunny, with a high near 46. Breezy.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Sunny, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fishers Island NY
 41.27°N 72.01°W (Elev. 7 ft)
Last Update:
5:23 am EDT Apr 15, 2026
Forecast Valid:
12pm EDT Apr 15, 2026-6pm EDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation