National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

30°F

-1°C

Humidity 39%
Wind Speed W 15 G 25 mph
Barometer 30.15 in (1021.0 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 4 Feb 11:56 am EST
Extended Forecast for

South Lyme CT

  • This Afternoon

    This Afternoon: Sunny, with a high near 31. Wind chill values between 20 and 25. Northwest wind around 11 mph, with gusts as high as 21 mph.

    High: 31 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 10. Northwest wind around 5 mph becoming calm in the evening.

    Low: 10 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 31. Wind chill values between 10 and 20. Calm wind becoming north around 6 mph.

    High: 31 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 11. Calm wind.

    Low: 11 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 30. Light and variable wind.

    High: 30 °F

    Partly Sunny

  • Friday Night

    Friday Night: Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 15. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 15 °F

    Mostly Cloudy
    then Snow
    Showers
    Likely

  • Saturday

    Saturday: A 40 percent chance of snow showers. Mostly cloudy, with a high near 26. Blustery.

    High: 26 °F

    Chance Snow
    Showers and
    Blustery

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 2.

    Low: 2 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny and cold, with a high near 18.

    High: 18 °F

    Cold

Detailed Forecast

This Afternoon
Sunny, with a high near 31. Wind chill values between 20 and 25. Northwest wind around 11 mph, with gusts as high as 21 mph.
Tonight
Partly cloudy, with a low around 10. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 31. Wind chill values between 10 and 20. Calm wind becoming north around 6 mph.
Thursday Night
Partly cloudy, with a low around 11. Calm wind.
Friday
Partly sunny, with a high near 30. Light and variable wind.
Friday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 15. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
A 40 percent chance of snow showers. Mostly cloudy, with a high near 26. Blustery.
Saturday Night
Mostly clear, with a low around 2.
Sunday
Mostly sunny and cold, with a high near 18.
Sunday Night
Partly cloudy, with a low around 4.
Monday
Mostly sunny, with a high near 24.
Monday Night
Partly cloudy, with a low around 12.
Tuesday
Mostly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Lyme CT
 41.32°N 72.29°W (Elev. 98 ft)
Last Update:
7:42 am EST Feb 4, 2026
Forecast Valid:
12pm EST Feb 4, 2026-6pm EST Feb 10, 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