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

75°F

24°C

Humidity 79%
Wind Speed SW 6 mph
Barometer 29.87 in (1011.5 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 19 Aug 6:56 pm EDT
Extended Forecast for

Groton / New London Airport CT

  • Tonight

    Tonight: Mostly clear, with a low around 68. Southwest wind 3 to 7 mph.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 82. North wind 5 to 7 mph becoming southwest in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers, mainly after 8pm. Mostly cloudy, with a low around 62. Light and variable wind.

    Low: 62 °F

    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers. Partly sunny, with a high near 77. East wind 7 to 9 mph.

    High: 77 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 62. Northeast wind around 7 mph.

    Low: 62 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers likely. Mostly cloudy, with a high near 76. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Sunday

    Sunday: A 40 percent chance of showers. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 68. Southwest wind 3 to 7 mph.
Thursday
Mostly sunny, with a high near 82. North wind 5 to 7 mph becoming southwest in the afternoon.
Thursday Night
A 50 percent chance of showers, mainly after 8pm. Mostly cloudy, with a low around 62. Light and variable wind.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 77. East wind 7 to 9 mph.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 62. Northeast wind around 7 mph.
Saturday
Showers likely. Mostly cloudy, with a high near 76. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Showers likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Mostly sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Groton / New London Airport CT
 41.34°N 72.05°W (Elev. 49 ft)
Last Update:
2:29 pm EDT Aug 19, 2026
Forecast Valid:
7pm EDT Aug 19, 2026-6pm EDT Aug 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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