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

74°F

23°C

Humidity 71%
Wind Speed SE 8 mph
Barometer 30.12 in (1020.0 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 31 Aug 12:56 pm EDT
Extended Forecast for

2 Miles WSW Fishers Island NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 73. Southeast wind around 7 mph.

    High: 73 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers and possibly a thunderstorm after 2am. Low around 67. South wind 3 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Chance
    Showers then
    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm before 2pm, then a chance of showers. High near 72. East wind 7 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 72 °F

    Showers

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers, mainly before 2am. Mostly cloudy, with a steady temperature around 69. East wind 11 to 13 mph.

    Low: 69 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then showers likely after 5pm. Mostly cloudy, with a steady temperature around 69. East wind 11 to 13 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 2am. Mostly cloudy, with a steady temperature around 71. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 71 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 60%.

    High: 76 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 73. Southeast wind around 7 mph.
Tonight
A slight chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers and possibly a thunderstorm after 2am. Low around 67. South wind 3 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers and possibly a thunderstorm before 2pm, then a chance of showers. High near 72. East wind 7 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
A 50 percent chance of showers, mainly before 2am. Mostly cloudy, with a steady temperature around 69. East wind 11 to 13 mph.
Wednesday
A chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then showers likely after 5pm. Mostly cloudy, with a steady temperature around 69. East wind 11 to 13 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely, mainly after 2am. Mostly cloudy, with a steady temperature around 71. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
Sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Fishers Island NY
 41.27°N 72.01°W (Elev. 7 ft)
Last Update:
7:34 am EDT Aug 31, 2026
Forecast Valid:
1pm EDT Aug 31, 2026-6pm EDT Sep 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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