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.

Overcast

38°F

3°C

Humidity 73%
Wind Speed S 9 mph
Barometer 30.19 in (1022.4 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 19 Mar 5:56 pm EDT
Extended Forecast for

2 Miles N South Lyme CT

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. Light south wind.

    Low: 30 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of rain after 5pm. Increasing clouds, with a high near 49. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 49 °F

    Mostly Sunny
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 40. Southwest wind 6 to 9 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 55. Northwest wind 5 to 7 mph.

    High: 55 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of rain after 2pm. Mostly cloudy, with a high near 53.

    High: 53 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely

  • Monday

    Monday: Rain likely, mainly before 8am. Mostly cloudy, with a high near 51. Chance of precipitation is 60%.

    High: 51 °F

    Rain Likely
    then Chance
    Rain

  • Monday Night

    Monday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 30. Light south wind.
Friday
A 30 percent chance of rain after 5pm. Increasing clouds, with a high near 49. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 22 mph.
Friday Night
Rain likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 40. Southwest wind 6 to 9 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Mostly sunny, with a high near 55. Northwest wind 5 to 7 mph.
Saturday Night
Mostly cloudy, with a low around 37. Calm wind.
Sunday
A 30 percent chance of rain after 2pm. Mostly cloudy, with a high near 53.
Sunday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Monday
Rain likely, mainly before 8am. Mostly cloudy, with a high near 51. Chance of precipitation is 60%.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 44.
Tuesday Night
Partly cloudy, with a low around 30.
Wednesday
Partly sunny, with a high near 46.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N South Lyme CT
 41.35°N 72.29°W (Elev. 98 ft)
Last Update:
6:12 pm EDT Mar 19, 2026
Forecast Valid:
6pm EDT Mar 19, 2026-6pm EDT Mar 26, 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