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.

Fog/Mist

42°F

6°C

Humidity 96%
Wind Speed SE 5 mph
Barometer 30.31 in (1026.4 mb)
Dewpoint 41°F (5°C)
Visibility 1.75 mi
Wind Chill39°F (4°C)
Last update 3 Apr 8:56 am EDT
Extended Forecast for

2 Miles SSE South Lyme CT

  • Today

    Today: Areas of fog before 3pm. Otherwise, mostly cloudy, with a high near 55. Light and variable wind becoming southwest 5 to 8 mph in the morning.

    High: 55 °F

    Areas Fog

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 49. Southwest wind 6 to 8 mph.

    Low: 49 °F

    Patchy Fog

  • Saturday

    Saturday: A 20 percent chance of showers after 2pm. Partly sunny, with a high near 63. Light and variable wind becoming east 5 to 9 mph in the afternoon.

    High: 63 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after 2am. Cloudy, with a low around 41. East wind 8 to 13 mph. Chance of precipitation is 60%.

    Low: 41 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers. High near 58. Southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 58 °F

    Showers
    Likely then
    Showers

  • Sunday Night

    Sunday Night: Showers before 8pm. Low around 39. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of rain and snow showers before 2pm, then a chance of rain showers. Partly sunny, with a high near 48. Chance of precipitation is 30%.

    High: 48 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
Areas of fog before 3pm. Otherwise, mostly cloudy, with a high near 55. Light and variable wind becoming southwest 5 to 8 mph in the morning.
Tonight
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 49. Southwest wind 6 to 8 mph.
Saturday
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 63. Light and variable wind becoming east 5 to 9 mph in the afternoon.
Saturday Night
Showers likely, mainly after 2am. Cloudy, with a low around 41. East wind 8 to 13 mph. Chance of precipitation is 60%.
Sunday
Showers. High near 58. Southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers before 8pm. Low around 39. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 51.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
A chance of rain and snow showers before 2pm, then a chance of rain showers. Partly sunny, with a high near 48. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 31.
Wednesday
Sunny, with a high near 47.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Mostly sunny, with a high near 54.
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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:
2:20 am EDT Apr 3, 2026
Forecast Valid:
9am EDT Apr 3, 2026-6pm EDT Apr 9, 2026
 
Forecast Discussion
 
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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