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

13°F

-11°C

Humidity 51%
Wind Speed NW 15 mph
Barometer 29.95 in (1014.3 mb)
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill-3°F (-19°C)
Last update 27 Jan 3:56 am EST
Extended Forecast for

South Lyme CT

  • Today

    Today: Increasing clouds, with a high near 23. Wind chill values between -5 and 5. West wind 7 to 13 mph, with gusts as high as 24 mph.

    High: 23 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 8. Wind chill values between zero and 5. West wind 6 to 9 mph, with gusts as high as 24 mph.

    Low: 8 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 24. Wind chill values between zero and 10. West wind 3 to 7 mph.

    High: 24 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 9. Light northwest wind.

    Low: 9 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 23. Northwest wind 5 to 9 mph, with gusts as high as 20 mph.

    High: 23 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 5.

    Low: 5 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 21.

    High: 21 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 3.

    Low: 3 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 23. Wind chill values between -5 and 5. West wind 7 to 13 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 8. Wind chill values between zero and 5. West wind 6 to 9 mph, with gusts as high as 24 mph.
Wednesday
Increasing clouds, with a high near 24. Wind chill values between zero and 10. West wind 3 to 7 mph.
Wednesday Night
Mostly cloudy, with a low around 9. Light northwest wind.
Thursday
Mostly sunny, with a high near 23. Northwest wind 5 to 9 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 5.
Friday
Sunny, with a high near 21.
Friday Night
Mostly clear, with a low around 3.
Saturday
Mostly sunny, with a high near 24.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 13.
Sunday
A 50 percent chance of snow. Mostly cloudy, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 32.
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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:
1:34 am EST Jan 27, 2026
Forecast Valid:
4am EST Jan 27, 2026-6pm EST Feb 2, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation