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

38°F

3°C

Humidity 55%
Wind Speed W 10 G 20 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 7 Dec 9:56 pm EST
Extended Forecast for

3 Miles ESE South Lyme CT

  • Tonight

    Tonight: Partly cloudy, with a low around 22. West wind 9 to 14 mph.

    Low: 22 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 30. Wind chill values between 10 and 20. North wind 9 to 14 mph, with gusts as high as 29 mph.

    High: 30 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15. North wind 3 to 6 mph.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 41. Wind chill values between 15 and 25. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 41 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow before 1am, then a slight chance of snow. Mostly cloudy, with a steady temperature around 36. Southwest wind 10 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 50 percent chance of rain. Mostly cloudy, with a high near 48.

    High: 48 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 34.

    Low: 34 °F

    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 22. West wind 9 to 14 mph.
Monday
Mostly sunny, with a high near 30. Wind chill values between 10 and 20. North wind 9 to 14 mph, with gusts as high as 29 mph.
Monday Night
Partly cloudy, with a low around 15. North wind 3 to 6 mph.
Tuesday
Increasing clouds, with a high near 41. Wind chill values between 15 and 25. Calm wind becoming south 5 to 8 mph in the afternoon.
Tuesday Night
A slight chance of rain and snow before 1am, then a slight chance of snow. Mostly cloudy, with a steady temperature around 36. Southwest wind 10 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 48.
Wednesday Night
A 40 percent chance of rain before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 34.
Thursday
Mostly sunny, with a high near 43.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
A chance of rain and snow. Partly sunny, with a high near 38. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 23.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 35.
Saturday Night
Partly cloudy, with a low around 20.
Sunday
Mostly sunny, with a high near 33.
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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:
5:39 pm EST Dec 7, 2025
Forecast Valid:
10pm EST Dec 7, 2025-6pm EST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation