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

60°F

16°C

Humidity 56%
Wind Speed E 10 mph
Barometer 30.34 in (1027.5 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 11 Oct 11:56 am EDT
Extended Forecast for

Fishers Island NY

  • This Afternoon

    This Afternoon: Rain, mainly after 2pm. High near 63. East wind around 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 63 °F

    Rain

  • Tonight

    Tonight: Rain and possibly a thunderstorm before 2am, then a chance of rain and thunderstorms, mainly between 2am and 5am. Steady temperature around 61. Breezy, with an east wind 20 to 24 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 61 °F

    Rain and
    Breezy

  • Columbus Day

    Columbus Day: A slight chance of rain before 8am, then a slight chance of showers between 8am and 11am. Cloudy through mid morning, then gradual clearing, with a high near 67. North wind 9 to 17 mph. Chance of precipitation is 20%.

    High: 67 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. Northwest wind 5 to 7 mph becoming northeast after midnight.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 65. Northeast wind around 11 mph becoming south in the afternoon.

    High: 65 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a steady temperature around 65. Breezy.

    Low: 65 °F

    Mostly Cloudy
    then Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 69.

    High: 69 °F

    Chance
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

Detailed Forecast

This Afternoon
Rain, mainly after 2pm. High near 63. East wind around 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain and possibly a thunderstorm before 2am, then a chance of rain and thunderstorms, mainly between 2am and 5am. Steady temperature around 61. Breezy, with an east wind 20 to 24 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Columbus Day
A slight chance of rain before 8am, then a slight chance of showers between 8am and 11am. Cloudy through mid morning, then gradual clearing, with a high near 67. North wind 9 to 17 mph. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 57. Northwest wind 5 to 7 mph becoming northeast after midnight.
Tuesday
Partly sunny, with a high near 65. Northeast wind around 11 mph becoming south in the afternoon.
Tuesday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a steady temperature around 65. Breezy.
Wednesday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 69.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 51.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 64.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 53. Windy.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 59. 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:
11:12 am EDT Oct 11, 2026
Forecast Valid:
12pm EDT Oct 11, 2026-6pm EDT Oct 17, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation