National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

36°F

2°C

Humidity 79%
Wind Speed E 3 mph
Barometer 29.89 in (1012.1 mb)
Dewpoint 30°F (-1°C)
Visibility 9.00 mi
Last update 26 Feb 9:56 am EST
Extended Forecast for

2 Miles SSE South Lyme CT

  • Today

    Today: Partly sunny, with a high near 39. West wind around 6 mph.

    High: 39 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 21. Calm wind becoming north around 5 mph after midnight.

    Low: 21 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 38. Wind chill values between 20 and 30. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 38 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 30. South wind 3 to 5 mph.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 45. Southwest wind around 7 mph.

    High: 45 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of snow showers before 1pm. Cloudy, then gradual clearing during the afternoon, with a high near 37.

    High: 37 °F

    Chance Snow
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of snow after 1pm. Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny
    then Chance
    Snow

Detailed Forecast

Today
Partly sunny, with a high near 39. West wind around 6 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 21. Calm wind becoming north around 5 mph after midnight.
Friday
Sunny, with a high near 38. Wind chill values between 20 and 30. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 30. South wind 3 to 5 mph.
Saturday
Sunny, with a high near 45. Southwest wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
A 30 percent chance of snow showers before 1pm. Cloudy, then gradual clearing during the afternoon, with a high near 37.
Sunday Night
Partly cloudy, with a low around 17.
Monday
A 30 percent chance of snow after 1pm. Partly sunny, with a high near 28.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
Mostly cloudy, with a high near 36.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 50%.
Wednesday
A 50 percent chance of rain. Mostly sunny, with a high near 43.
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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:
10:42 am EST Feb 26, 2026
Forecast Valid:
10am EST Feb 26, 2026-6pm EST Mar 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