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.

Light Rain Fog/Mist

36°F

2°C

Humidity 93%
Wind Speed E 14 mph
Barometer 29.63 in (1003.3 mb)
Dewpoint 34°F (1°C)
Visibility 3.00 mi
Wind Chill27°F (-3°C)
Last update 20 Feb 5:56 pm EST
Extended Forecast for

2 Miles SSE 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

  • Tonight

    Tonight: Rain likely before 10pm, then a slight chance of snow after 1am. Areas of fog between 11pm and midnight. Otherwise, mostly cloudy, with a low around 31. Northeast wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 31 °F

    Rain Likely
    and Areas Fog
    then Slight
    Chance Snow

  • Saturday

    Saturday: A 20 percent chance of rain after 4pm. Partly sunny, with a high near 41. Calm wind becoming east around 6 mph in the afternoon.

    High: 41 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: A chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 28. Northeast wind around 6 mph. Chance of precipitation is 40%.

    Low: 28 °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 8 to 15 mph, with gusts as high as 26 mph.

    High: 37 °F

    Slight Chance
    Snow then
    Chance Snow

  • Sunday Night

    Sunday Night: Snow. Areas of blowing snow. Low around 28. Blustery, with a northeast wind 16 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    Low: 28 °F

    Snow and
    Areas Blowing
    Snow

  • Monday

    Monday: Snow. Areas of blowing snow before 4pm. High near 35. Windy. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    High: 35 °F

    Snow and
    Areas Blowing
    Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

Detailed Forecast

Tonight
Rain likely before 10pm, then a slight chance of snow after 1am. Areas of fog between 11pm and midnight. Otherwise, mostly cloudy, with a low around 31. Northeast wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday
A 20 percent chance of rain after 4pm. Partly sunny, with a high near 41. Calm wind becoming east around 6 mph in the afternoon.
Saturday Night
A chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 28. Northeast wind around 6 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 8 to 15 mph, with gusts as high as 26 mph.
Sunday Night
Snow. Areas of blowing snow. Low around 28. Blustery, with a northeast wind 16 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Monday
Snow. Areas of blowing snow before 4pm. 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 23.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Partly cloudy, with a low around 20.
Wednesday
A chance of snow before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 30%.
Wednesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 32.
Thursday
Rain and snow 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 29. Chance of precipitation is 40%.
Friday
A 30 percent chance of snow. Partly sunny, with a high near 40.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE South Lyme CT
 41.28°N 72.3°W (Elev. 0 ft)
Last Update:
5:24 pm EST Feb 20, 2026
Forecast Valid:
6pm EST Feb 20, 2026-6pm EST Feb 27, 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