Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Light Snow Fog/Mist

22°F

-6°C

Humidity 89%
Wind Speed NE 16 G 30 mph
Barometer 29.95 in (1014.3 mb)
Dewpoint 19°F (-7°C)
Visibility 1.00 mi
Wind Chill8°F (-13°C)
Last update 25 Jan 6:56 pm EST
Extended Forecast for

South Lyme CT

Winter Storm Warning January 25, 07:14pm until January 26, 01:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning January 25, 07:14pm until January 26, 01:00pm

    NOW until 1:00pm Mon

    Winter Storm Warning

  • Tonight

    Low: 24 °F

    Wintry Mix
    and Areas
    Blowing Snow

  • Monday

    Monday: A slight chance of snow and freezing rain before 9am, 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 40%.

    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, freezing rain, and sleet before 3am, then a chance of snow between 3am and 4am, then a slight chance of snow and freezing rain after 4am. The sleet could be heavy at times. Areas of blowing snow before 8pm, then patchy blowing snow after 1am. Temperature rising to around 30 by 3am. Wind chill values between 10 and 20. 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 1 to 3 inches possible.
Monday
A slight chance of snow and freezing rain before 9am, 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 40%.
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
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
South Lyme CT
 41.32°N 72.29°W (Elev. 98 ft)
3:12 pm EST Jan 25, 2026
7pm EST Jan 25, 2026-6pm EST Feb 1, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database