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.

Overcast

34°F

1°C

Humidity 92%
Wind Speed N 8 mph
Barometer 29.70 in (1005.8 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 21 Feb 1:56 am EST
Extended Forecast for

3 Miles SE South Lyme CT

Winter Storm Watch February 22, 06:00am until February 23, 06:00pm
Click here for hazard details and duration
Winter Storm Watch

  • Overnight

    Overnight: A 20 percent chance of snow. Mostly cloudy, with a low around 32. Northwest wind around 6 mph.

    Low: 32 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A slight chance of rain and snow after 4pm. Partly sunny, with a high near 41. Light and variable wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 41 °F

    Partly Sunny
    then Slight
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 29. Wind chill values between 20 and 25. Northeast wind around 7 mph. Chance of precipitation is 40%.

    Low: 29 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Sunday

    Sunday: A 50 percent chance of snow, mainly after 1pm. Mostly cloudy, with a high near 37. Wind chill values between 20 and 30. East wind 9 to 15 mph.

    High: 37 °F

    Slight Chance
    Snow then
    Chance Snow

  • Sunday Night

    Sunday Night: Snow. Low around 29. Windy, with a northeast wind 16 to 21 mph increasing to 23 to 28 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    Low: 29 °F

    Snow and
    Windy

  • Monday

    Monday: Snow. High near 35. Windy. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    High: 35 °F

    Snow and
    Windy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow. Mostly cloudy, with a low around 32. Northwest wind around 6 mph.
Saturday
A slight chance of rain and snow after 4pm. Partly sunny, with a high near 41. Light and variable wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
A chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 29. Wind chill values between 20 and 25. Northeast wind around 7 mph. Chance of precipitation is 40%.
Sunday
A 50 percent chance of snow, mainly after 1pm. Mostly cloudy, with a high near 37. Wind chill values between 20 and 30. East wind 9 to 15 mph.
Sunday Night
Snow. Low around 29. Windy, with a northeast wind 16 to 21 mph increasing to 23 to 28 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Monday
Snow. High near 35. Windy. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
Mostly sunny, with a high near 33.
Tuesday Night
Partly cloudy, with a low around 21.
Wednesday
A chance of snow before 4pm, then a chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 30%.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 50%.
Thursday
Rain likely. Mostly cloudy, with a high near 43. Chance of precipitation is 60%.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
Friday
A 30 percent chance of snow. Partly sunny, with a high near 39.
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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:
5:24 pm EST Feb 20, 2026
Forecast Valid:
2am EST Feb 21, 2026-6pm EST Feb 27, 2026
 
Forecast Discussion
 
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Additional Resources

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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