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 41%
Wind Speed SW 12 mph
Barometer 30.10 in (1019.3 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 13 Mar 12:56 pm EDT
Extended Forecast for

2 Miles SSE South Lyme CT

  • This Afternoon

    This Afternoon: Mostly cloudy, with a steady temperature around 41. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 41 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 30 percent chance of rain, mainly between 11pm and 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 36. South wind 11 to 15 mph, with gusts as high as 25 mph.

    Low: 36 °F

    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 47. Breezy, with a west wind 16 to 22 mph, with gusts as high as 33 mph.

    High: 47 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 30. West wind 7 to 14 mph.

    Low: 30 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 44. Light and variable wind becoming southeast 5 to 10 mph in the morning.

    High: 44 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain likely, mainly after 5am. Mostly cloudy, with a low around 37. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Mostly Cloudy
    then Rain
    Likely

  • Monday

    Monday: Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 57. Breezy. Chance of precipitation is 100%.

    High: 57 °F

    Heavy Rain
    and Breezy

  • Monday Night

    Monday Night: Rain. Low around 40. Windy. Chance of precipitation is 90%.

    Low: 40 °F

    Rain and
    Windy

  • Tuesday

    Tuesday: Rain likely, mainly before 8am. Partly sunny, with a high near 47. Chance of precipitation is 60%.

    High: 47 °F

    Rain Likely
    then Chance
    Rain

Detailed Forecast

This Afternoon
Mostly cloudy, with a steady temperature around 41. Southwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of rain, mainly between 11pm and 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 36. South wind 11 to 15 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny, with a high near 47. Breezy, with a west wind 16 to 22 mph, with gusts as high as 33 mph.
Saturday Night
Increasing clouds, with a low around 30. West wind 7 to 14 mph.
Sunday
Mostly cloudy, with a high near 44. Light and variable wind becoming southeast 5 to 10 mph in the morning.
Sunday Night
Rain likely, mainly after 5am. Mostly cloudy, with a low around 37. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 57. Breezy. Chance of precipitation is 100%.
Monday Night
Rain. Low around 40. Windy. Chance of precipitation is 90%.
Tuesday
Rain likely, mainly before 8am. Partly sunny, with a high near 47. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Mostly cloudy, with a high near 43.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE South Lyme CT
 41.28°N 72.3°W (Elev. 0 ft)
Last Update:
6:18 am EDT Mar 13, 2026
Forecast Valid:
1pm EDT Mar 13, 2026-6pm EDT Mar 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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