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.

Mostly Cloudy

34°F

1°C

Humidity 54%
Wind Speed NW 17 G 26 mph
Barometer 30.05 in (1017.5 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 4 Dec 5:56 pm EST
Extended Forecast for

3 Miles ESE South Lyme CT

  • Tonight

    Tonight: Mostly clear, with a low around 15. Wind chill values between 5 and 10. Northwest wind 5 to 15 mph, with gusts as high as 29 mph.

    Low: 15 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 35. Wind chill values between 10 and 20. Calm wind becoming south around 6 mph in the afternoon.

    High: 35 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a steady temperature around 30. Calm wind.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 43. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 43 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 27. West wind around 6 mph.

    Low: 27 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Increasing clouds, with a high near 41.

    High: 41 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 16.

    Low: 16 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 15. Wind chill values between 5 and 10. Northwest wind 5 to 15 mph, with gusts as high as 29 mph.
Friday
Sunny, with a high near 35. Wind chill values between 10 and 20. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a steady temperature around 30. Calm wind.
Saturday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 43. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 27. West wind around 6 mph.
Sunday
Increasing clouds, with a high near 41.
Sunday Night
Mostly cloudy, with a low around 24.
Monday
Mostly sunny, with a high near 35.
Monday Night
Mostly clear, with a low around 16.
Tuesday
Partly sunny, with a high near 39.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
Wednesday
Mostly cloudy, with a high near 44.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 33.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 44.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE South Lyme CT
 41.3°N 72.27°W (Elev. 75 ft)
Last Update:
2:14 pm EST Dec 4, 2025
Forecast Valid:
6pm EST Dec 4, 2025-6pm EST Dec 11, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation