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 and Breezy

36°F

2°C

Humidity 42%
Wind Speed W 24 G 38 mph
Barometer 29.31 in (992.6 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 29 Dec 9:56 pm EST
Extended Forecast for

South Lyme CT

Wind Advisory until December 30, 06:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until December 30, 06:00pm

    NOW until 6:00pm Tue

    Wind Advisory

  • Tonight

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 31. Wind chill values between 10 and 20. West wind 14 to 18 mph, with gusts as high as 44 mph.

    High: 31 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23. Wind chill values between 15 and 20. West wind 9 to 13 mph, with gusts as high as 33 mph.

    Low: 23 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 34. Wind chill values between 15 and 25. West wind 8 to 11 mph, with gusts as high as 24 mph.

    High: 34 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 20. Southwest wind around 7 mph, with gusts as high as 23 mph.

    Low: 20 °F

    Chance Snow

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 16.

    Low: 16 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 24. Wind chill values between 10 and 20. West wind around 14 mph, with gusts as high as 39 mph.
Tuesday
Partly sunny, with a high near 31. Wind chill values between 10 and 20. West wind 14 to 18 mph, with gusts as high as 44 mph.
Tuesday Night
Partly cloudy, with a low around 23. Wind chill values between 15 and 20. West wind 9 to 13 mph, with gusts as high as 33 mph.
Wednesday
Mostly cloudy, with a high near 34. Wind chill values between 15 and 25. West wind 8 to 11 mph, with gusts as high as 24 mph.
Wednesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 20. Southwest wind around 7 mph, with gusts as high as 23 mph.
New Year's Day
Mostly sunny, with a high near 29.
Thursday Night
Mostly clear, with a low around 16.
Friday
Mostly sunny, with a high near 30.
Friday Night
Partly cloudy, with a low around 20.
Saturday
Mostly sunny, with a high near 35.
Saturday Night
Partly cloudy, with a low around 18.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Mostly cloudy, with a low around 20.
Monday
Mostly cloudy, with a high near 36.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Lyme CT
 41.32°N 72.29°W (Elev. 98 ft)
Last Update:
3:54 pm EST Dec 29, 2025
Forecast Valid:
10pm EST Dec 29, 2025-6pm EST Jan 5, 2026
 
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Additional Resources

Radar & Satellite Image

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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