Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Unknown Precip Fog/Mist and Breezy

24°F

-4°C

Humidity 84%
Wind Speed NE 21 G 36 mph
Barometer 29.89 in (1012.0 mb)
Dewpoint 20°F (-7°C)
Visibility 1.75 mi
Wind Chill9°F (-13°C)
Last update 25 Jan 7:56 pm EST
Extended Forecast for

South Lyme CT

Winter Storm Warning January 25, 08:43pm until January 26, 01:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning January 25, 08:43pm until January 26, 01:00pm

    NOW until 1:00pm Mon

    Winter Storm Warning

  • Tonight

    Low: 22 °F

    Wintry Mix
    and Windy

  • Monday

    Monday: A chance of snow and freezing rain before 10am, then a chance of snow.  Cloudy, with a temperature falling to around 25 by 5pm. Wind chill values between 15 and 25. North wind 3 to 8 mph.  Chance of precipitation is 50%.

    High: 30 °F

    Chance Wintry
    Mix then
    Chance Light
    Snow

  • Monday Night

    Monday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 11. Wind chill values between zero and 10. Northwest wind 11 to 15 mph.

    Low: 11 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: Increasing clouds, with a high near 24. Wind chill values between zero and 10. Southwest wind around 9 mph.

    High: 24 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 7. West wind 7 to 11 mph.

    Low: 7 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 24.

    High: 24 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 10.

    Low: 10 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 22.

    High: 22 °F

    Partly Sunny

Detailed Forecast

Tonight
Snow and sleet before 1am, then a chance of snow and freezing rain. Temperature rising to around 30 by 3am. Wind chill values between 5 and 15. Windy, with a northeast wind 24 to 29 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. Total nighttime snow and sleet accumulation of 2 to 4 inches possible.
Monday
A chance of snow and freezing rain before 10am, then a chance of snow. Cloudy, with a temperature falling to around 25 by 5pm. Wind chill values between 15 and 25. North wind 3 to 8 mph. Chance of precipitation is 50%.
Monday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 11. Wind chill values between zero and 10. Northwest wind 11 to 15 mph.
Tuesday
Increasing clouds, with a high near 24. Wind chill values between zero and 10. Southwest wind around 9 mph.
Tuesday Night
Mostly clear, with a low around 7. West wind 7 to 11 mph.
Wednesday
Sunny, with a high near 24.
Wednesday Night
Mostly cloudy, with a low around 10.
Thursday
Partly sunny, with a high near 22.
Thursday Night
Mostly clear, with a low around 5.
Friday
Sunny and cold, with a high near 19.
Friday Night
Mostly clear, with a low around 6.
Saturday
Sunny, with a high near 24.
Saturday Night
Mostly clear, with a low around 8.
Sunday
Sunny, with a high near 29.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
South Lyme CT
 41.32°N 72.29°W (Elev. 98 ft)
8:33 pm EST Jan 25, 2026
8pm EST Jan 25, 2026-6pm EST Feb 1, 2026
 
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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