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

65°F

18°C

Humidity 90%
Wind Speed SE 13 G 18 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 20 Sep 8:56 pm EDT
Extended Forecast for

Fishers Island NY

  • Tonight

    Tonight: Rain likely, mainly before 2am. Cloudy, with a low around 65. South wind 7 to 10 mph becoming west after midnight. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 65 °F

    Rain Likely

  • Monday

    Monday: Partly sunny, with a high near 67. Breezy, with a northeast wind 15 to 20 mph.

    High: 67 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 58. Northeast wind 14 to 16 mph.

    Low: 58 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of rain. Cloudy, with a high near 63. Breezy, with a northeast wind 20 to 23 mph.

    High: 63 °F

    Chance Rain
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 57. Breezy, with a northeast wind 22 to 24 mph.

    Low: 57 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Partly sunny, with a high near 63. Windy.

    High: 63 °F

    Partly Sunny
    and Windy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 57. Breezy.

    Low: 57 °F

    Mostly Cloudy
    and Breezy

  • Thursday

    Thursday: Partly sunny, with a high near 64. Windy.

    High: 64 °F

    Partly Sunny
    and Windy

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 57. Breezy.

    Low: 57 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Rain likely, mainly before 2am. Cloudy, with a low around 65. South wind 7 to 10 mph becoming west after midnight. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Partly sunny, with a high near 67. Breezy, with a northeast wind 15 to 20 mph.
Monday Night
Mostly cloudy, with a low around 58. Northeast wind 14 to 16 mph.
Tuesday
A 40 percent chance of rain. Cloudy, with a high near 63. Breezy, with a northeast wind 20 to 23 mph.
Tuesday Night
Mostly cloudy, with a low around 57. Breezy, with a northeast wind 22 to 24 mph.
Wednesday
Partly sunny, with a high near 63. Windy.
Wednesday Night
Mostly cloudy, with a low around 57. Breezy.
Thursday
Partly sunny, with a high near 64. Windy.
Thursday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 57. Breezy.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 64. Windy.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 57. Windy.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 66. Windy.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 58. Breezy.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 67. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fishers Island NY
 41.26°N 71.98°W (Elev. 0 ft)
Last Update:
2:08 pm EDT Sep 20, 2026
Forecast Valid:
9pm EDT Sep 20, 2026-6pm EDT Sep 27, 2026
 
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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

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation