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.

Fair

60°F

16°C

Humidity 90%
Wind Speed N 3 mph
Barometer 29.84 in (1010.5 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 27 Jul 6:56 am EDT
Extended Forecast for

Groton / New London Airport CT

  • Today

    Today: Sunny, with a high near 78. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 66. South wind around 6 mph.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 77. South wind 8 to 14 mph.

    High: 77 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 65. Southeast wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 65 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 11am, then showers between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. High near 75. East wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 75 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers, with thunderstorms also possible after 11pm. Low around 65. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.

    High: 76 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 78. Calm wind becoming south 5 to 9 mph in the afternoon.
Tonight
Partly cloudy, with a low around 66. South wind around 6 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 77. South wind 8 to 14 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 65. Southeast wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Showers and possibly a thunderstorm before 11am, then showers between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. High near 75. East wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
Showers, with thunderstorms also possible after 11pm. Low around 65. Chance of precipitation is 80%. New rainfall 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 70%.
Thursday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 82.
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:
5:44 am EDT Jul 27, 2026
Forecast Valid:
7am EDT Jul 27, 2026-6pm EDT Aug 2, 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