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.

Fair

26°F

-3°C

Humidity 48%
Wind Speed NW 12 G 28 mph
Barometer 29.82 in (1009.6 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 24 Feb 9:56 am EST
Extended Forecast for

South Lyme CT

  • Today

    Today: Mostly sunny, with a high near 30. Wind chill values between 15 and 25. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 30 °F

    Mostly Sunny

  • Tonight

    Tonight: A 50 percent chance of snow after 4am. Increasing clouds, with a low around 15. Light and variable wind.

    Low: 15 °F

    Partly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: Snow before 1pm, then a slight chance of rain showers between 1pm and 4pm. High near 40. Wind chill values between 25 and 35. Southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 40 °F

    Snow then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27. Southwest wind 3 to 5 mph.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of snow after 1pm. Partly sunny, with a high near 39. West wind 3 to 5 mph.

    High: 39 °F

    Mostly Sunny
    then Chance
    Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 26 °F

    Snow Likely

  • Friday

    Friday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 30. Wind chill values between 15 and 25. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.
Tonight
A 50 percent chance of snow after 4am. Increasing clouds, with a low around 15. Light and variable wind.
Wednesday
Snow before 1pm, then a slight chance of rain showers between 1pm and 4pm. High near 40. Wind chill values between 25 and 35. Southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Wednesday Night
Partly cloudy, with a low around 27. Southwest wind 3 to 5 mph.
Thursday
A 40 percent chance of snow after 1pm. Partly sunny, with a high near 39. West wind 3 to 5 mph.
Thursday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday
Mostly sunny, with a high near 39.
Friday Night
Mostly clear, with a low around 25.
Saturday
Mostly sunny, with a high near 43.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Partly sunny, with a high near 40.
Sunday Night
Partly cloudy, with a low around 15.
Monday
A 30 percent chance of snow. Mostly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Lyme CT
 41.32°N 72.29°W (Elev. 98 ft)
Last Update:
5:37 am EST Feb 24, 2026
Forecast Valid:
10am EST Feb 24, 2026-6pm EST Mar 2, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation