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 90%
Wind Speed N 9 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 15 Aug 3:56 am EDT
Extended Forecast for

East Lyme CT

  • Today

    Today: Sunny, with a high near 81. Light and variable wind.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 80. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Showers, mainly after 8pm. Low around 65. South wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 65 °F

    Showers
    Likely then
    Showers

  • Monday

    Monday: Showers, mainly before 8am. High near 82. Southeast wind 7 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 82 °F

    Showers then
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Tuesday Night

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

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 81. Light and variable wind.
Tonight
Mostly clear, with a low around 58. Calm wind.
Sunday
Sunny, with a high near 80. Calm wind becoming south 5 to 8 mph in the afternoon.
Sunday Night
Showers, mainly after 8pm. Low around 65. South wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Showers, mainly before 8am. High near 82. Southeast wind 7 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Sunny, with a high near 84.
Wednesday Night
A 30 percent chance of showers after 2am. Partly cloudy, with a low around 67.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 83.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
East Lyme CT
 41.39°N 72.25°W (Elev. 197 ft)
Last Update:
2:20 am EDT Aug 15, 2026
Forecast Valid:
4am EDT Aug 15, 2026-6pm EDT Aug 21, 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