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

62°F

17°C

Humidity 93%
Wind Speed Calm
Barometer 30.20 in (1022.5 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 24 Jul 11:56 pm EDT
Extended Forecast for

3 Miles WSW Fishers Island NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 64. Light northeast wind.

    Low: 64 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 72. Northeast wind 7 to 10 mph becoming east in the afternoon.

    High: 72 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. East wind around 7 mph becoming northeast after midnight.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 74. Northeast wind around 9 mph becoming east in the afternoon.

    High: 74 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. East wind around 6 mph becoming light and variable in the evening.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers after 2am. Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 75. Chance of precipitation is 60%.

    High: 75 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.

    Low: 68 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 64. Light northeast wind.
Saturday
Sunny, with a high near 72. Northeast wind 7 to 10 mph becoming east in the afternoon.
Saturday Night
Mostly clear, with a low around 62. East wind around 7 mph becoming northeast after midnight.
Sunday
Sunny, with a high near 74. Northeast wind around 9 mph becoming east in the afternoon.
Sunday Night
Mostly clear, with a low around 63. East wind around 6 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 73.
Monday Night
A 30 percent chance of showers after 2am. Partly cloudy, with a low around 68.
Tuesday
Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 75. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 68.
Friday
Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Fishers Island NY
 41.25°N 72.04°W (Elev. 0 ft)
Last Update:
2:50 pm EDT Jul 24, 2026
Forecast Valid:
12am EDT Jul 25, 2026-6pm EDT Jul 31, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation