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.

Fair

30°F

-1°C

Humidity 51%
Wind Speed S 10 mph
Barometer 30.40 in (1029.5 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 18 Mar 6:56 pm EDT
Extended Forecast for

2 Miles N South Lyme CT

  • Tonight

    Tonight: Mostly clear, with a low around 26. South wind around 6 mph becoming calm in the evening.

    Low: 26 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 41. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 41 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 50. Calm wind becoming south around 6 mph in the afternoon.

    High: 50 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 38. South wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Chance Rain
    then Rain
    Likely

  • Saturday

    Saturday: A 30 percent chance of rain before noon. Partly sunny, with a high near 53.

    High: 53 °F

    Chance Rain
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of rain before 2am. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 26. South wind around 6 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 41. Calm wind becoming southeast around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 31. Calm wind.
Friday
Mostly sunny, with a high near 50. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 38. South wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A 30 percent chance of rain before noon. Partly sunny, with a high near 53.
Saturday Night
Mostly cloudy, with a low around 38.
Sunday
Partly sunny, with a high near 54.
Sunday Night
A 30 percent chance of rain before 2am. Mostly cloudy, with a low around 34.
Monday
Mostly sunny, with a high near 46.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Partly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N South Lyme CT
 41.35°N 72.29°W (Elev. 98 ft)
Last Update:
5:35 pm EDT Mar 18, 2026
Forecast Valid:
7pm EDT Mar 18, 2026-6pm EDT Mar 25, 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