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.

Overcast

57°F

14°C

Humidity 74%
Wind Speed S 12 mph
Barometer 29.95 in (1014.1 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 13 May 3:56 pm EDT
Extended Forecast for

Groton / New London Airport CT

  • Tonight

    Tonight: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 51. South wind 10 to 17 mph, with gusts as high as 30 mph.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 11am. High near 61. East wind 8 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 61 °F

    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers. Mostly cloudy, with a high near 62. North wind 5 to 8 mph.

    High: 62 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 51. South wind 10 to 17 mph, with gusts as high as 30 mph.
Thursday
Showers, with thunderstorms also possible after 11am. High near 61. East wind 8 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 49. Calm wind.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 62. North wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 48. Calm wind.
Saturday
Sunny, with a high near 71.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Sunny, with a high near 71.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Groton / New London Airport CT
 41.34°N 72.05°W (Elev. 49 ft)
Last Update:
2:21 pm EDT May 13, 2026
Forecast Valid:
4pm EDT May 13, 2026-6pm EDT May 20, 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