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

Hazardous Weather Conditions

Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Partly Cloudy

32°F

0°C

Humidity 79%
Wind Speed Calm
Barometer 30.08 in (1018.4 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 14 Feb 6:56 pm EST
Extended Forecast for

3 Miles SSE South Lyme CT

  • Tonight

    Tonight: Mostly clear, with a low around 26. Northwest wind 3 to 5 mph.

    Low: 26 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 37. Wind chill values between 25 and 30. Light and variable wind becoming east around 6 mph in the afternoon.

    High: 37 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 50 percent chance of snow, mainly after 1am. Cloudy, with a low around 29. Wind chill values between 20 and 25. Northeast wind around 7 mph.

    Low: 29 °F

    Slight Chance
    Snow then
    Chance Snow

  • Washington's Birthday

    Washington's Birthday: A 20 percent chance of snow before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 38. Wind chill values between 20 and 30. Northeast wind around 8 mph.

    High: 38 °F

    Slight Chance
    Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. North wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.

    Low: 34 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 26. Northwest wind 3 to 5 mph.
Sunday
Increasing clouds, with a high near 37. Wind chill values between 25 and 30. Light and variable wind becoming east around 6 mph in the afternoon.
Sunday Night
A 50 percent chance of snow, mainly after 1am. Cloudy, with a low around 29. Wind chill values between 20 and 25. Northeast wind around 7 mph.
Washington's Birthday
A 20 percent chance of snow before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 38. Wind chill values between 20 and 30. Northeast wind around 8 mph.
Monday Night
Mostly cloudy, with a low around 30. North wind around 5 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
A 50 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.
Wednesday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.
Thursday
A 30 percent chance of rain after 1pm. Partly sunny, with a high near 42.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 31.
Friday
A 50 percent chance of rain. Mostly cloudy, with a high near 41.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 29.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE South Lyme CT
 41.28°N 72.27°W (Elev. 0 ft)
Last Update:
7:04 pm EST Feb 14, 2026
Forecast Valid:
7pm EST Feb 14, 2026-6pm EST Feb 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation