National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

33°F

1°C

Humidity 54%
Wind Speed S 3 mph
Barometer 30.14 in (1020.7 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 27 Feb 10:56 am EST
Extended Forecast for

3 Miles SE South Lyme CT

  • Today

    Today: Sunny, with a high near 40. Calm wind becoming south around 5 mph in the afternoon.

    High: 40 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 29. South wind 3 to 5 mph.

    Low: 29 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 46. Wind chill values between 25 and 35 early. South wind 5 to 7 mph.

    High: 46 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31. Light and variable wind becoming north around 6 mph after midnight.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Scattered snow showers, mainly before 1pm. Cloudy, then gradual clearing during the afternoon, with a high near 38. Northwest wind 7 to 11 mph. Chance of precipitation is 50%.

    High: 38 °F

    Scattered
    Snow Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 17.

    Low: 17 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

  • Monday Night

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

    Low: 20 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of rain and snow after 1pm. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.

    High: 37 °F

    Partly Sunny
    then Chance
    Rain/Snow

Detailed Forecast

Today
Sunny, with a high near 40. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 29. South wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 46. Wind chill values between 25 and 35 early. South wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 31. Light and variable wind becoming north around 6 mph after midnight.
Sunday
Scattered snow showers, mainly before 1pm. Cloudy, then gradual clearing during the afternoon, with a high near 38. Northwest wind 7 to 11 mph. Chance of precipitation is 50%.
Sunday Night
Mostly clear, with a low around 17.
Monday
Partly sunny, with a high near 28.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
A chance of rain and snow after 1pm. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Tuesday Night
Rain likely, mainly after 1am. Cloudy, with a low around 32. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 45.
Wednesday Night
Mostly cloudy, with a low around 34.
Thursday
A 30 percent chance of rain. Cloudy, with a high near 44.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE South Lyme CT
 41.3°N 72.24°W (Elev. 0 ft)
Last Update:
12:50 am EST Feb 27, 2026
Forecast Valid:
11am EST Feb 27, 2026-6pm EST Mar 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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