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

22°F

-6°C

Humidity 38%
Wind Speed W 13 mph
Barometer 29.99 in (1015.4 mb)
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 29 Jan 12:56 pm EST
Extended Forecast for

2 Miles SSE South Lyme CT

Cold Weather Advisory January 30, 12:00am until January 30, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 23. Wind chill values between 10 and 15. West wind 11 to 13 mph.

    High: 23 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 10. Wind chill values between zero and 10. Northwest wind 9 to 11 mph.

    Low: 10 °F

    Mostly Clear

  • Friday

    Friday: Sunny and cold, with a high near 18. Wind chill values between -5 and 5. West wind 11 to 15 mph.

    High: 18 °F

    Cold

  • Friday Night

    Friday Night: Mostly clear, with a low around 7. Wind chill values between zero and 5. Northwest wind 7 to 10 mph.

    Low: 7 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 22. Northwest wind around 6 mph.

    High: 22 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow likely, mainly before 1pm. Cloudy, with a high near 26. Blustery. Chance of precipitation is 60%.

    High: 26 °F

    Snow Likely
    and Blustery

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before 1am. Mostly cloudy, with a low around 18. Blustery.

    Low: 18 °F

    Chance Snow
    and Blustery

  • Monday

    Monday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 23. Wind chill values between 10 and 15. West wind 11 to 13 mph.
Tonight
Mostly clear, with a low around 10. Wind chill values between zero and 10. Northwest wind 9 to 11 mph.
Friday
Sunny and cold, with a high near 18. Wind chill values between -5 and 5. West wind 11 to 15 mph.
Friday Night
Mostly clear, with a low around 7. Wind chill values between zero and 5. Northwest wind 7 to 10 mph.
Saturday
Mostly sunny, with a high near 22. Northwest wind around 6 mph.
Saturday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 13.
Sunday
Snow likely, mainly before 1pm. Cloudy, with a high near 26. Blustery. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of snow before 1am. Mostly cloudy, with a low around 18. Blustery.
Monday
Mostly sunny, with a high near 32.
Monday Night
Mostly clear, with a low around 18.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Mostly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE South Lyme CT
 41.28°N 72.3°W (Elev. 0 ft)
Last Update:
1:43 am EST Jan 29, 2026
Forecast Valid:
1pm EST Jan 29, 2026-6pm EST Feb 4, 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