National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

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 49%
Wind Speed NW 5 mph
Barometer 30.54 in (1034.1 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 29 Mar 12:56 am EDT
Extended Forecast for

3 Miles SE South Lyme CT

  • Overnight

    Overnight: Mostly clear, with a low around 30. Northwest wind around 6 mph.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 45. Southwest wind 5 to 14 mph.

    High: 45 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 40. Southwest wind 11 to 14 mph.

    Low: 40 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 53. Southwest wind 10 to 15 mph.

    High: 53 °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 7 to 10 mph.

    Low: 46 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers before 8am. Partly sunny, with a high near 57.

    High: 57 °F

    Chance
    Showers then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of rain after 2pm. Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 8pm. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.

    Low: 39 °F

    Rain Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 30. Northwest wind around 6 mph.
Sunday
Sunny, with a high near 45. Southwest wind 5 to 14 mph.
Sunday Night
Mostly cloudy, with a low around 40. Southwest wind 11 to 14 mph.
Monday
Mostly cloudy, with a high near 53. Southwest wind 10 to 15 mph.
Monday Night
A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 46. Southwest wind 7 to 10 mph.
Tuesday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
A 40 percent chance of rain after 2pm. Partly sunny, with a high near 60.
Wednesday Night
Rain likely, mainly after 8pm. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 44.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 36. Chance of precipitation is 50%.
Friday
Rain and snow likely. Mostly cloudy, with a high near 43. 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 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE South Lyme CT
 41.3°N 72.24°W (Elev. 0 ft)
Last Update:
2:35 pm EDT Mar 28, 2026
Forecast Valid:
1am EDT Mar 29, 2026-6pm EDT Apr 4, 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