Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Mostly Cloudy

51°F

11°C

Humidity 43%
Wind Speed W 20 G 31 mph
Barometer 30.09 in (1019.0 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 7 Apr 1:56 pm EDT
Extended Forecast for

South Lyme CT

  • This Afternoon

    This Afternoon: A 20 percent chance of showers.  Mostly sunny, with a high near 52. West wind around 16 mph, with gusts as high as 28 mph.

    High: 52 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 27. Wind chill values between 15 and 20. North wind 11 to 15 mph.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 46. Wind chill values between 15 and 25 early. North wind around 9 mph becoming south in the afternoon.

    High: 46 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 29. South wind around 5 mph becoming calm  in the evening.

    Low: 29 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 50. South wind 5 to 7 mph.

    High: 50 °F

    Sunny

  • Thursday Night

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

    Low: 37 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Mostly sunny, with a high near 52. West wind around 16 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 27. Wind chill values between 15 and 20. North wind 11 to 15 mph.
Wednesday
Sunny, with a high near 46. Wind chill values between 15 and 25 early. North wind around 9 mph becoming south in the afternoon.
Wednesday Night
Clear, with a low around 29. South wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 50. South wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Sunny, with a high near 58.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
Partly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
South Lyme CT
 41.32°N 72.29°W (Elev. 98 ft)
6:23 am EDT Apr 7, 2026
2pm EDT Apr 7, 2026-6pm EDT Apr 13, 2026
 
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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