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

22°F

-6°C

Humidity 75%
Wind Speed Calm
Barometer 30.10 in (1019.3 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Last update 13 Feb 11:56 pm EST
Extended Forecast for

3 Miles SE South Lyme CT

  • Overnight

    Overnight: Partly cloudy, with a low around 24. West wind around 6 mph.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 38. Wind chill values between 20 and 30. West wind 7 to 11 mph.

    High: 38 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. West wind around 6 mph.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 36. Wind chill values between 15 and 25. North wind around 5 mph becoming calm in the morning.

    High: 36 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 27. Light southeast wind.

    Low: 27 °F

    Slight Chance
    Snow

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 24. West wind around 6 mph.
Saturday
Mostly sunny, with a high near 38. Wind chill values between 20 and 30. West wind 7 to 11 mph.
Saturday Night
Mostly clear, with a low around 24. West wind around 6 mph.
Sunday
Mostly sunny, with a high near 36. Wind chill values between 15 and 25. North wind around 5 mph becoming calm in the morning.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 27. Light southeast wind.
Washington's Birthday
Partly sunny, with a high near 41.
Monday Night
Mostly cloudy, with a low around 34.
Tuesday
Partly sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
A 40 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 50%.
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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:
1:16 pm EST Feb 13, 2026
Forecast Valid:
12am EST Feb 14, 2026-6pm EST Feb 20, 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