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

53°F

12°C

Humidity 96%
Wind Speed SW 8 mph
Barometer 29.79 in (1008.9 mb)
Dewpoint 52°F (11°C)
Visibility 2.00 mi
Wind Chill50°F (10°C)
Last update 5 Apr 1:56 pm EDT
Extended Forecast for

2 Miles SSE South Lyme CT

  • This Afternoon

    This Afternoon: Rain. Steady temperature around 52. Southwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Rain

  • Tonight

    Tonight: Rain likely, mainly before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 38. Northwest wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain Likely
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 51. West wind around 11 mph.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain after 2am. Partly cloudy, with a low around 37. West wind 3 to 6 mph.

    Low: 37 °F

    Partly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before 2pm. Mostly sunny, with a high near 49. West wind 6 to 13 mph.

    High: 49 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Rain. Steady temperature around 52. Southwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain likely, mainly before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 38. Northwest wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Sunny, with a high near 51. West wind around 11 mph.
Monday Night
A 30 percent chance of rain after 2am. Partly cloudy, with a low around 37. West wind 3 to 6 mph.
Tuesday
A 30 percent chance of rain, mainly before 2pm. Mostly sunny, with a high near 49. West wind 6 to 13 mph.
Tuesday Night
Mostly clear, with a low around 30.
Wednesday
Sunny, with a high near 45.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 60.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Partly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE South Lyme CT
 41.28°N 72.3°W (Elev. 0 ft)
Last Update:
11:20 am EDT Apr 5, 2026
Forecast Valid:
2pm EDT Apr 5, 2026-6pm EDT Apr 11, 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