Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

34°F

1°C

Humidity 23%
Wind Speed N 15 mph
Barometer 29.92 in (1013.0 mb)
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 2 Feb 3:56 pm EST
Extended Forecast for

South Lyme CT

  • Tonight

    Tonight: Clear, with a low around 7. Northwest wind 8 to 13 mph becoming light  in the evening.

    Low: 7 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 34. Wind chill values between 5 and 15. Calm wind becoming southwest around 6 mph.

    High: 34 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 16. Light west wind.

    Low: 16 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 32. Wind chill values between 15 and 25. Calm wind becoming northwest 5 to 7 mph in the morning.

    High: 32 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 12. Calm wind.

    Low: 12 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 8.

    Low: 8 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow before 1am.  Mostly cloudy, with a low around 5.

    Low: 5 °F

    Chance Snow

Detailed Forecast

Tonight
Clear, with a low around 7. Northwest wind 8 to 13 mph becoming light in the evening.
Tuesday
Sunny, with a high near 34. Wind chill values between 5 and 15. Calm wind becoming southwest around 6 mph.
Tuesday Night
Partly cloudy, with a low around 16. Light west wind.
Wednesday
Mostly sunny, with a high near 32. Wind chill values between 15 and 25. Calm wind becoming northwest 5 to 7 mph in the morning.
Wednesday Night
Mostly clear, with a low around 12. Calm wind.
Thursday
Mostly sunny, with a high near 28.
Thursday Night
Mostly clear, with a low around 8.
Friday
Partly sunny, with a high near 30.
Friday Night
A 30 percent chance of snow before 1am. Mostly cloudy, with a low around 5.
Saturday
Mostly sunny and cold, with a high near 16.
Saturday Night
Mostly clear, with a low around 2.
Sunday
Mostly sunny and cold, with a high near 18.
Sunday Night
Partly cloudy, with a low around 4.
Monday
Mostly sunny, with a high near 22.
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ABOUT THIS FORECAST

 
Point Forecast:
South Lyme CT
 41.32°N 72.29°W (Elev. 98 ft)
1:22 pm EST Feb 2, 2026
4pm EST Feb 2, 2026-6pm EST Feb 9, 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