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

45°F

7°C

Humidity 86%
Wind Speed S 7 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 26 Mar 4:56 am EDT
Extended Forecast for

2 Miles SSE South Lyme CT

  • Overnight

    Overnight: A 20 percent chance of rain. Cloudy, with a steady temperature around 44. South wind around 9 mph.

    Low: 44 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A slight chance of rain before 8am, then a chance of showers after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 55. Southwest wind around 14 mph. Chance of precipitation is 30%.

    High: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Showers. Low around 44. Southwest wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 44 °F

    Showers

  • Friday

    Friday: Showers likely, mainly before 8am. Cloudy, with a high near 51. North wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A slight chance of rain, mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 30. Light and variable wind becoming northeast around 6 mph after midnight. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Rain/Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of rain. Cloudy, with a steady temperature around 44. South wind around 9 mph.
Thursday
A slight chance of rain before 8am, then a chance of showers after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 55. Southwest wind around 14 mph. Chance of precipitation is 30%.
Thursday Night
Showers. Low around 44. Southwest wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers likely, mainly before 8am. Cloudy, with a high near 51. North wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of rain, mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 30. Light and variable wind becoming northeast around 6 mph after midnight. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Mostly sunny, with a high near 45.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
Mostly cloudy, with a high near 52.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
A 40 percent chance of rain. Partly sunny, with a high near 53.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 40.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 51.
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:
5:14 am EDT Mar 26, 2026
Forecast Valid:
5am EDT Mar 26, 2026-6pm EDT Apr 1, 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