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.

Overcast

38°F

3°C

Humidity 43%
Wind Speed NW 18 G 29 mph
Barometer 29.58 in (1001.8 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 11 Nov 11:56 am EST
Extended Forecast for

South Lyme CT

  • Veterans Day

    Veterans Day: A 20 percent chance of snow showers before 4pm. Mostly cloudy, with a high near 42. West wind around 18 mph, with gusts as high as 36 mph.

    High: 42 °F

    Slight Chance
    Snow Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 34. West wind 8 to 15 mph, with gusts as high as 31 mph.

    Low: 34 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 49. West wind 8 to 11 mph, with gusts as high as 21 mph.

    High: 49 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 37. West wind around 6 mph.

    Low: 37 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 52. West wind 7 to 13 mph.

    High: 52 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

Detailed Forecast

Veterans Day
A 20 percent chance of snow showers before 4pm. Mostly cloudy, with a high near 42. West wind around 18 mph, with gusts as high as 36 mph.
Tonight
Partly cloudy, with a low around 34. West wind 8 to 15 mph, with gusts as high as 31 mph.
Wednesday
Mostly cloudy, with a high near 49. West wind 8 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly cloudy, with a low around 37. West wind around 6 mph.
Thursday
Mostly sunny, with a high near 52. West wind 7 to 13 mph.
Thursday Night
Mostly clear, with a low around 33.
Friday
Mostly sunny, with a high near 49.
Friday Night
Mostly clear, with a low around 28.
Saturday
Sunny, with a high near 47.
Saturday Night
A 30 percent chance of rain after 1am. Partly cloudy, with a low around 31.
Sunday
A 40 percent chance of rain. Partly sunny, with a high near 53.
Sunday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 38.
Monday
A 30 percent chance of rain. Partly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Lyme CT
 41.33°N 72.32°W (Elev. 56 ft)
Last Update:
7:01 am EST Nov 11, 2025
Forecast Valid:
12pm EST Nov 11, 2025-6pm EST Nov 17, 2025
 
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Additional Resources

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Chance of Precipitation