Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Light Rain

56°F

13°C

Humidity 97%
Wind Speed E 17 G 25 mph
Barometer 29.93 in (1013.3 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 9 May 1:56 pm EDT
Extended Forecast for

2 Miles SSE South Lyme CT

Flood Warning until further notice
Flood Watch May 9, 02:09pm until May 10, 01:00am
Click here for hazard details and duration
Flood Warning until further notice
Flood Watch
  •  
    Flood Warning until further notice
    Flood Watch May 9, 02:09pm until May 10, 01:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 55 °F

    Heavy Rain

  • Tonight

    Tonight: Showers before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm, then a chance of showers after 11pm.  Steady temperature around 54. East wind 6 to 9 mph becoming west after midnight.  Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 54 °F

    Showers then
    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before 2pm.  Partly sunny, with a high near 66. West wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 66 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52. West wind around 7 mph.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 67. Northwest wind 6 to 8 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 48.

    Low: 48 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Rain and possibly a thunderstorm before 5pm, then showers after 5pm. Some of the storms could produce heavy rainfall. Steady temperature around 55. East wind around 13 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
Showers before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm, then a chance of showers after 11pm. Steady temperature around 54. East wind 6 to 9 mph becoming west after midnight. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
A 20 percent chance of showers before 2pm. Partly sunny, with a high near 66. West wind 10 to 14 mph, with gusts as high as 24 mph.
Saturday Night
Mostly clear, with a low around 52. West wind around 7 mph.
Sunday
Sunny, with a high near 67. Northwest wind 6 to 8 mph.
Sunday Night
Clear, with a low around 48.
Monday
Sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Mostly cloudy, with a low around 57.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 68.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 59.
Thursday
A 30 percent chance of showers. Mostly cloudy, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE South Lyme CT
 41.28°N 72.3°W (Elev. 0 ft)
10:35 am EDT May 9, 2025
2pm EDT May 9, 2025-6pm EDT May 15, 2025
 
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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