Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair and Breezy

16°F

-9°C

Humidity 54%
Wind Speed NW 23 G 37 mph
Barometer 29.85 in (1010.9 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill-2°F (-19°C)
Last update 27 Jan 12:56 am EST
Extended Forecast for

South Lyme CT

  • Overnight

    Overnight: Mostly clear, with a low around 9. Wind chill values between zero and 5. Northwest wind around 10 mph, with gusts as high as 28 mph.

    Low: 9 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of flurries after noon.  Increasing clouds, with a high near 23. Wind chill values between zero and 10. West wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 23 °F

    Chance
    Flurries

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 8. Wind chill values between zero and 5. West wind 6 to 8 mph, with gusts as high as 23 mph.

    Low: 8 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 24. Wind chill values between zero and 10. West wind 5 to 7 mph.

    High: 24 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 8. Light northwest wind.

    Low: 8 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 22.

    High: 22 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 5 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny and cold, with a high near 20.

    High: 20 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around 5.

    Low: 5 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 9. Wind chill values between zero and 5. Northwest wind around 10 mph, with gusts as high as 28 mph.
Tuesday
A chance of flurries after noon. Increasing clouds, with a high near 23. Wind chill values between zero and 10. West wind 6 to 10 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 8. Wind chill values between zero and 5. West wind 6 to 8 mph, with gusts as high as 23 mph.
Wednesday
Sunny, with a high near 24. Wind chill values between zero and 10. West wind 5 to 7 mph.
Wednesday Night
Mostly cloudy, with a low around 8. Light northwest wind.
Thursday
Mostly sunny, with a high near 22.
Thursday Night
Mostly clear, with a low around 5.
Friday
Mostly sunny and cold, with a high near 20.
Friday Night
Partly cloudy, with a low around 5.
Saturday
Mostly sunny, with a high near 26.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 12.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 32.
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ABOUT THIS FORECAST

 
Point Forecast:
South Lyme CT
 41.32°N 72.29°W (Elev. 98 ft)
6:03 pm EST Jan 26, 2026
1am EST Jan 27, 2026-6pm EST Feb 2, 2026
 
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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