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.

Mostly Cloudy

30°F

-1°C

Humidity 31%
Wind Speed W 17 G 33 mph
Barometer 29.60 in (1002.3 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 30 Dec 3:56 pm EST
Extended Forecast for

South Lyme CT

Wind Advisory December 30, 04:01pm until December 30, 06:00pm
Click here for hazard details and duration
...
  •  
    Wind Advisory December 30, 04:01pm until December 30, 06:00pm

    NOW until 6:00pm Tue

    Wind Advisory

  • Tonight

    Low: 22 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 34. Wind chill values between 15 and 25. West wind 7 to 10 mph, with gusts as high as 22 mph.

    High: 34 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Snow, mainly after 1am. Low around 22. Southwest wind around 6 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 22 °F

    Chance Snow
    then Snow

  • New Year's Day

    New Year's Day: A 30 percent chance of snow before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 31. Wind chill values between 15 and 20. Northwest wind 7 to 13 mph, with gusts as high as 25 mph.

    High: 31 °F

    Chance Snow

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 14. West wind around 7 mph, with gusts as high as 24 mph.

    Low: 14 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 22. Wind chill values between 15 and 20. West wind 9 to 14 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 7 to 10 mph, with gusts as high as 22 mph.
Wednesday Night
Snow, mainly after 1am. Low around 22. Southwest wind around 6 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
New Year's Day
A 30 percent chance of snow before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 31. Wind chill values between 15 and 20. Northwest wind 7 to 13 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 14. West wind around 7 mph, with gusts as high as 24 mph.
Friday
Partly sunny, with a high near 31.
Friday Night
Partly cloudy, with a low around 19.
Saturday
Sunny, with a high near 31.
Saturday Night
Partly cloudy, with a low around 16.
Sunday
Mostly sunny, with a high near 32.
Sunday Night
Partly cloudy, with a low around 20.
Monday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 36.
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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:
1:40 pm EST Dec 30, 2025
Forecast Valid:
4pm EST Dec 30, 2025-6pm EST Jan 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation