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 69%
Wind Speed S 9 mph
Barometer 30.09 in (1018.8 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 4 Aug 5:56 pm EDT
Extended Forecast for

East Lyme CT

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. Light and variable wind.

    Low: 61 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 83. Calm wind becoming south around 6 mph in the afternoon.

    High: 83 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Patchy fog after 3am. Otherwise, increasing clouds, with a low around 69. Calm wind. Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 87. Heat index values as high as 97. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 87 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before 2am. Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 61. Light and variable wind.
Wednesday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 83. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms. Patchy fog after 3am. Otherwise, increasing clouds, with a low around 69. Calm wind. Chance of precipitation is 40%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 87. Heat index values as high as 97. Calm wind becoming southwest 5 to 8 mph in the morning.
Thursday Night
A 20 percent chance of showers before 2am. Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 88.
Friday Night
Partly cloudy, with a low around 71.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 71.
Sunday
Sunny, with a high near 87.
Sunday Night
Mostly clear, with a low around 69.
Monday
Sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 69.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 86.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Lyme CT
 41.39°N 72.25°W (Elev. 197 ft)
Last Update:
4:10 pm EDT Aug 4, 2026
Forecast Valid:
6pm EDT Aug 4, 2026-6pm EDT Aug 11, 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