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

35°F

2°C

Humidity 78%
Wind Speed SW 9 mph
Barometer 29.67 in (1004.5 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 25 Feb 5:56 pm EST
Extended Forecast for

3 Miles SE South Lyme CT

  • Tonight

    Tonight: Mostly clear, with a low around 31. Southwest wind 6 to 13 mph becoming west after midnight.

    Low: 31 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 38. Wind chill values between 25 and 30. Northwest wind around 7 mph.

    High: 38 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 23. North wind around 6 mph.

    Low: 23 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 38. Wind chill values between 20 and 30. Light and variable wind becoming south around 6 mph in the afternoon.

    High: 38 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a steady temperature around 33. South wind around 6 mph.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 30.

    Low: 30 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 37.

    High: 37 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 31. Southwest wind 6 to 13 mph becoming west after midnight.
Thursday
Mostly sunny, with a high near 38. Wind chill values between 25 and 30. Northwest wind around 7 mph.
Thursday Night
Mostly clear, with a low around 23. North wind around 6 mph.
Friday
Sunny, with a high near 38. Wind chill values between 20 and 30. Light and variable wind becoming south around 6 mph in the afternoon.
Friday Night
Mostly clear, with a steady temperature around 33. South wind around 6 mph.
Saturday
Mostly sunny, with a high near 44.
Saturday Night
Increasing clouds, with a low around 30.
Sunday
A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 37.
Sunday Night
Partly cloudy, with a low around 18.
Monday
A 30 percent chance of snow after 1pm. Mostly cloudy, with a high near 27.
Monday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 17.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 35. Chance of precipitation is 30%.
Tuesday Night
Rain and snow likely. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of rain. Partly sunny, with a high near 42.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE South Lyme CT
 41.3°N 72.24°W (Elev. 0 ft)
Last Update:
5:43 pm EST Feb 25, 2026
Forecast Valid:
6pm EST Feb 25, 2026-6pm EST Mar 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation