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

71°F

22°C

Humidity 61%
Wind Speed SE 12 mph
Barometer 30.14 in (1020.5 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 2 Sep 2:56 pm EDT
Extended Forecast for

East Lyme CT

  • Tonight

    Tonight: Showers and possibly a thunderstorm, mainly after 2am. Low around 64. Southeast wind around 6 mph becoming calm. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Slight Chance
    Showers then
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm, mainly before 11am, then a chance of showers and thunderstorms after 11am. High near 81. Southwest wind 7 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 83. West wind 3 to 7 mph.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. Light northwest wind.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers after 2pm. Increasing clouds, with a high near 77.

    High: 77 °F

    Sunny then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers and possibly a thunderstorm, mainly after 2am. Low around 64. Southeast wind around 6 mph becoming calm. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm, mainly before 11am, then a chance of showers and thunderstorms after 11am. High near 81. Southwest wind 7 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%.
Friday
Sunny, with a high near 83. West wind 3 to 7 mph.
Friday Night
Mostly clear, with a low around 61. Light northwest wind.
Saturday
A 30 percent chance of showers after 2pm. Increasing clouds, with a high near 77.
Saturday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 56.
Sunday
Sunny, with a high near 73.
Sunday Night
Mostly clear, with a low around 55.
Labor Day
Sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
East Lyme CT
 41.36°N 72.23°W (Elev. 98 ft)
Last Update:
3:08 pm EDT Sep 2, 2026
Forecast Valid:
3pm EDT Sep 2, 2026-6pm EDT Sep 9, 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