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

44°F

7°C

Humidity 49%
Wind Speed N 10 mph
Barometer 30.40 in (1029.4 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 12 Apr 1:56 am EDT
Extended Forecast for

2 Miles N South Lyme CT

Frost Advisory until April 12, 09:00am
Click here for hazard details and duration
Frost Advisory
  •  
    Frost Advisory until April 12, 09:00am

    NOW until 9:00am Sun

    Frost Advisory

  • Overnight

    Low: 38 °F

    Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 54. Light and variable wind becoming south 5 to 8 mph in the afternoon.

    High: 54 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 42. South wind 6 to 8 mph.

    Low: 42 °F

    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 65. Southwest wind 9 to 14 mph, with gusts as high as 25 mph.

    High: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 54. West wind 5 to 10 mph, with gusts as high as 22 mph.

    Low: 54 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

Detailed Forecast

Overnight
Clear, with a low around 38. North wind around 6 mph becoming calm.
Sunday
Increasing clouds, with a high near 54. Light and variable wind becoming south 5 to 8 mph in the afternoon.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 42. South wind 6 to 8 mph.
Monday
A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 65. Southwest wind 9 to 14 mph, with gusts as high as 25 mph.
Monday Night
A 20 percent chance of showers before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 54. West wind 5 to 10 mph, with gusts as high as 22 mph.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Mostly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 75.
Wednesday Night
Mostly cloudy, with a low around 56.
Thursday
Partly sunny, with a high near 75.
Thursday Night
Mostly cloudy, with a low around 54.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Partly sunny, with a high near 64.
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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:
6:36 pm EDT Apr 11, 2026
Forecast Valid:
2am EDT Apr 12, 2026-6pm EDT Apr 18, 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