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

35°F

2°C

Humidity 89%
Wind Speed N 3 mph
Barometer 30.27 in (1025.0 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 2 Nov 11:56 pm EST
Extended Forecast for

3 Miles SSE South Lyme CT

  • Overnight

    Overnight: Partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers between 11am and 1pm, then rain likely after 1pm. Mostly cloudy, with a high near 60. South wind 6 to 13 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Slight Chance
    Showers then
    Rain Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers before 1am. Cloudy during the early evening, then gradual clearing, with a low around 46. Southwest wind 10 to 17 mph becoming northwest after midnight.

    Low: 46 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 59. Breezy, with a northwest wind 16 to 21 mph.

    High: 59 °F

    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46. West wind 8 to 13 mph.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 45. Breezy.

    Low: 45 °F

    Chance
    Showers and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 54. Breezy.

    High: 54 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 46. Calm wind.
Monday
A slight chance of showers between 11am and 1pm, then rain likely after 1pm. Mostly cloudy, with a high near 60. South wind 6 to 13 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A 40 percent chance of showers before 1am. Cloudy during the early evening, then gradual clearing, with a low around 46. Southwest wind 10 to 17 mph becoming northwest after midnight.
Tuesday
Sunny, with a high near 59. Breezy, with a northwest wind 16 to 21 mph.
Tuesday Night
Mostly clear, with a low around 46. West wind 8 to 13 mph.
Wednesday
Partly sunny, with a high near 60.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 45. Breezy.
Thursday
Sunny, with a high near 54. Breezy.
Thursday Night
Mostly clear, with a low around 39.
Friday
Partly sunny, with a high near 58.
Friday Night
Showers likely. Mostly cloudy, with a low around 52. Breezy. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 55.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE South Lyme CT
 41.28°N 72.27°W (Elev. 0 ft)
Last Update:
8:21 pm EST Nov 2, 2025
Forecast Valid:
12am EST Nov 3, 2025-6pm EST Nov 9, 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