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

64°F

18°C

Humidity 75%
Wind Speed SE 9 mph
Barometer 30.18 in (1022.0 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 19 Aug 9:56 pm EDT
Extended Forecast for

East Lyme CT

  • Tonight

    Tonight: Partly cloudy, with a low around 59. Light east wind.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers between 11am and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 71. East wind 6 to 10 mph. Chance of precipitation is 40%.

    High: 71 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. East wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers before 8am. Partly sunny, with a high near 75. Northeast wind 13 to 15 mph.

    High: 75 °F

    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57. North wind 13 to 15 mph.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 59. Light east wind.
Wednesday
A chance of showers between 11am and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 71. East wind 6 to 10 mph. Chance of precipitation is 40%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. East wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 75. Northeast wind 13 to 15 mph.
Thursday Night
Partly cloudy, with a low around 57. North wind 13 to 15 mph.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 63.
Sunday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 79.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 65.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Lyme CT
 41.39°N 72.25°W (Elev. 197 ft)
Last Update:
3:14 pm EDT Aug 19, 2025
Forecast Valid:
10pm EDT Aug 19, 2025-6pm EDT Aug 26, 2025
 
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