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

41°F

5°C

Humidity 82%
Wind Speed W 7 G 18 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 1 Dec 1:56 am EST
Extended Forecast for

3 Miles ESE South Lyme CT

  • Overnight

    Overnight: Mostly cloudy early, then becoming clear, with a low around 32. West wind around 10 mph, with gusts as high as 23 mph.

    Low: 32 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 42. Wind chill values between 25 and 35. Northwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 42 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 27. Light and variable wind.

    Low: 27 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Rain. High near 45. Light and variable wind becoming northeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 45 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mixing with snow after 10pm, then gradually ending. Cloudy, then gradually becoming partly cloudy, with a low around 28. Northwest wind around 11 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 28 °F

    Rain/Snow
    Likely

  • Wednesday

    Wednesday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 15.

    Low: 15 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy early, then becoming clear, with a low around 32. West wind around 10 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 42. Wind chill values between 25 and 35. Northwest wind 8 to 13 mph, with gusts as high as 23 mph.
Monday Night
Increasing clouds, with a low around 27. Light and variable wind.
Tuesday
Rain. High near 45. Light and variable wind becoming northeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Tuesday Night
Rain likely, mixing with snow after 10pm, then gradually ending. Cloudy, then gradually becoming partly cloudy, with a low around 28. Northwest wind around 11 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday
Sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 42.
Thursday Night
Mostly clear, with a low around 15.
Friday
Mostly sunny, with a high near 35.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 26.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 50%.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 28.
Sunday
Partly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE South Lyme CT
 41.3°N 72.27°W (Elev. 75 ft)
Last Update:
1:19 am EST Dec 1, 2025
Forecast Valid:
2am EST Dec 1, 2025-6pm EST Dec 7, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation