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.

A Few Clouds

36°F

2°C

Humidity 55%
Wind Speed W 10 mph
Barometer 29.77 in (1007.9 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 11 Nov 8:56 pm EST
Extended Forecast for

3 Miles SSE South Lyme CT

  • Tonight

    Tonight: Increasing clouds, with a low around 38. Breezy, with a west wind 16 to 24 mph.

    Low: 38 °F

    Increasing
    Clouds and
    Breezy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 49. Southwest wind 16 to 18 mph.

    High: 49 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. West wind 14 to 16 mph.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 51. West wind 14 to 17 mph.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37. Northwest wind 11 to 17 mph.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain after 1am. Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Increasing clouds, with a low around 38. Breezy, with a west wind 16 to 24 mph.
Wednesday
Mostly cloudy, with a high near 49. Southwest wind 16 to 18 mph.
Wednesday Night
Mostly cloudy, with a low around 42. West wind 14 to 16 mph.
Thursday
Mostly sunny, with a high near 51. West wind 14 to 17 mph.
Thursday Night
Mostly clear, with a low around 37. Northwest wind 11 to 17 mph.
Friday
Mostly sunny, with a high near 48.
Friday Night
Mostly clear, with a low around 34.
Saturday
Sunny, with a high near 46.
Saturday Night
A 30 percent chance of rain after 1am. Partly cloudy, with a low around 36.
Sunday
Rain likely, mainly before 1pm. Mostly cloudy, with a high near 54. Chance of precipitation is 60%.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 50. Breezy.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE South Lyme CT
 41.28°N 72.27°W (Elev. 0 ft)
Last Update:
1:09 pm EST Nov 11, 2025
Forecast Valid:
9pm EST Nov 11, 2025-6pm EST Nov 18, 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