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

41°F

5°C

Humidity 86%
Wind Speed N 6 mph
Barometer 29.95 in (1014.1 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 18 Oct 12:56 am EDT
Extended Forecast for

2 Miles SSE South Lyme CT

  • Overnight

    Overnight: Clear, with a low around 39. North wind around 6 mph.

    Low: 39 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 63. North wind around 5 mph becoming light and variable in the morning.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51. Light south wind.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 68. South wind 6 to 15 mph.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers, with thunderstorms also possible after 5am. Low around 57. South wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Slight Chance
    Showers then
    Showers

  • Monday

    Monday: Showers, mainly before 2pm. High near 66. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 66 °F

    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers before 2am. Partly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.

    Low: 53 °F

    Showers
    Likely

Detailed Forecast

Overnight
Clear, with a low around 39. North wind around 6 mph.
Saturday
Sunny, with a high near 63. North wind around 5 mph becoming light and variable in the morning.
Saturday Night
Partly cloudy, with a low around 51. Light south wind.
Sunday
Mostly sunny, with a high near 68. South wind 6 to 15 mph.
Sunday Night
Showers, with thunderstorms also possible after 5am. Low around 57. South wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers, mainly before 2pm. High near 66. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
A 30 percent chance of showers before 2am. Partly cloudy, with a low around 50.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Wednesday
Showers likely, mainly before 8am. Partly sunny, with a high near 63. Chance of precipitation is 60%.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 47.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 61.
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:
4:43 pm EDT Oct 17, 2025
Forecast Valid:
1am EDT Oct 18, 2025-6pm EDT Oct 24, 2025
 
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