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.

Mostly Cloudy

39°F

4°C

Humidity 23%
Wind Speed N 13 G 24 mph
Barometer 30.37 in (1028.3 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 28 Mar 3:56 pm EDT
Extended Forecast for

2 Miles SSE South Lyme CT

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 30. Northwest wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 23 mph.

    Low: 30 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 47. Light west wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

    High: 47 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 39. Southwest wind around 11 mph, with gusts as high as 22 mph.

    Low: 39 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, with a high near 56. Southwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 56 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 46. Southwest wind 6 to 8 mph.

    Low: 46 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of rain before 2pm. Partly sunny, with a high near 61.

    High: 61 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of rain after 2pm. Partly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 8pm. Mostly cloudy, with a low around 38. Chance of precipitation is 70%.

    Low: 38 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 30. Northwest wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 23 mph.
Sunday
Sunny, with a high near 47. Light west wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Sunday Night
Increasing clouds, with a low around 39. Southwest wind around 11 mph, with gusts as high as 22 mph.
Monday
Mostly cloudy, with a high near 56. Southwest wind 8 to 13 mph, with gusts as high as 23 mph.
Monday Night
A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 46. Southwest wind 6 to 8 mph.
Tuesday
A 30 percent chance of rain before 2pm. Partly sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
A 40 percent chance of rain after 2pm. Partly sunny, with a high near 62.
Wednesday Night
Rain likely, mainly after 8pm. Mostly cloudy, with a low around 38. Chance of precipitation is 70%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 46.
Thursday Night
A chance of rain and snow. Cloudy, with a low around 35. Chance of precipitation is 50%.
Friday
Rain and snow likely. Mostly cloudy, with a high near 44. Chance of precipitation is 60%.
Friday Night
Rain likely. Cloudy, with a low around 37. Chance of precipitation is 60%.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 49.
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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:
2:35 pm EDT Mar 28, 2026
Forecast Valid:
4pm EDT Mar 28, 2026-6pm EDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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