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

23°F

-5°C

Humidity 60%
Wind Speed Calm
Barometer 29.96 in (1014.4 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Last update 5 Feb 6:56 pm EST
Extended Forecast for

3 Miles SE South Lyme CT

Extreme Cold Watch February 7, 06:00pm until February 8, 01:00pm
Click here for hazard details and duration
Extreme Cold Watch

  • Tonight

    Tonight: Partly cloudy, with a low around 16. Calm wind becoming northeast around 6 mph in the evening.

    Low: 16 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 30. Wind chill values between 10 and 20. North wind around 6 mph becoming calm in the afternoon.

    High: 30 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Snow likely after 1am. Mostly cloudy, with a low around 20. Light and variable wind. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Mostly Cloudy
    then Snow
    Likely

  • Saturday

    Saturday: Snow, mainly before 1pm. Temperature falling to around 18 by 5pm. Wind chill values between zero and 10. Windy, with a northwest wind 5 to 15 mph increasing to 16 to 26 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 24 °F⇓

    Snow and
    Windy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 4. Windy, with a northwest wind 21 to 28 mph, with gusts as high as 38 mph.

    Low: 4 °F

    Mostly Cloudy
    and Windy

  • Sunday

    Sunday: Mostly sunny and cold, with a high near 17. Blustery.

    High: 17 °F

    Cold and
    Blustery

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 8. Blustery.

    Low: 8 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 24.

    High: 24 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 11.

    Low: 11 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 16. Calm wind becoming northeast around 6 mph in the evening.
Friday
Mostly cloudy, with a high near 30. Wind chill values between 10 and 20. North wind around 6 mph becoming calm in the afternoon.
Friday Night
Snow likely after 1am. Mostly cloudy, with a low around 20. Light and variable wind. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Saturday
Snow, mainly before 1pm. Temperature falling to around 18 by 5pm. Wind chill values between zero and 10. Windy, with a northwest wind 5 to 15 mph increasing to 16 to 26 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
Mostly cloudy, with a low around 4. Windy, with a northwest wind 21 to 28 mph, with gusts as high as 38 mph.
Sunday
Mostly sunny and cold, with a high near 17. Blustery.
Sunday Night
Mostly clear, with a low around 8. Blustery.
Monday
Sunny, with a high near 24.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Sunny, with a high near 30.
Tuesday Night
Partly cloudy, with a low around 18.
Wednesday
Mostly sunny, with a high near 34.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE South Lyme CT
 41.3°N 72.24°W (Elev. 0 ft)
Last Update:
1:09 pm EST Feb 5, 2026
Forecast Valid:
7pm EST Feb 5, 2026-6pm EST Feb 12, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation