National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Overcast

35°F

2°C

Humidity 82%
Wind Speed W 10 G 22 mph
Barometer 30.10 in (1019.1 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 17 Jan 7:56 pm EST
Extended Forecast for

Fishers Island NY

Winter Weather Advisory January 18, 10:00am until January 18, 10:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: A 20 percent chance of rain after 4am. Mostly cloudy, with a low around 34. West wind 6 to 13 mph.

    Low: 34 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: Periods of rain and snow, becoming all snow after 11am. High near 35. Southwest wind 5 to 8 mph becoming northeast in the afternoon. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Rain/Snow
    then Snow

  • Sunday Night

    Sunday Night: Snow likely before 1am. Mostly cloudy, with a low around 28. Wind chill values between 20 and 25. Northeast wind 8 to 10 mph becoming northwest after midnight. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Low: 28 °F

    Snow Likely

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 34. Wind chill values between 20 and 25. Breezy, with a west wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon.

    High: 34 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 22. Breezy, with a west wind 20 to 23 mph.

    Low: 22 °F

    Partly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 18.

    Low: 18 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 34. Breezy.

    Low: 34 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

Tonight
A 20 percent chance of rain after 4am. Mostly cloudy, with a low around 34. West wind 6 to 13 mph.
Sunday
Periods of rain and snow, becoming all snow after 11am. High near 35. Southwest wind 5 to 8 mph becoming northeast in the afternoon. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Sunday Night
Snow likely before 1am. Mostly cloudy, with a low around 28. Wind chill values between 20 and 25. Northeast wind 8 to 10 mph becoming northwest after midnight. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
M.L.King Day
Mostly sunny, with a high near 34. Wind chill values between 20 and 25. Breezy, with a west wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 22. Breezy, with a west wind 20 to 23 mph.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Mostly clear, with a low around 18.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 34. Breezy.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 23.
Friday
Mostly sunny, with a high near 32.
Friday Night
Mostly cloudy, with a low around 26.
Saturday
Partly sunny, with a high near 33.
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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:
5:41 pm EST Jan 17, 2026
Forecast Valid:
8pm EST Jan 17, 2026-6pm EST Jan 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation