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.

Fog/Mist

39°F

4°C

Humidity 96%
Wind Speed Calm
Barometer 30.14 in (1020.5 mb)
Dewpoint 38°F (3°C)
Visibility 2.00 mi
Last update 7 Mar 12:56 pm EST
Extended Forecast for

2 Miles N South Lyme CT

Dense Fog Advisory March 7, 10:00pm until March 8, 09:00am
Click here for hazard details and duration
Dense Fog Advisory

  • This Afternoon

    This Afternoon: Patchy fog. Otherwise, cloudy, with a high near 42. South wind around 7 mph.

    High: 42 °F

    Patchy Fog

  • Tonight

    Tonight: Patchy drizzle with a chance of showers between 10pm and 4am, then showers likely with areas of drizzle after 4am. The drizzle could be heavy at times. Patchy dense fog. Otherwise, cloudy, with a temperature rising to around 45 by 1am. Southwest wind 6 to 8 mph. Chance of precipitation is 60%.

    Low: 42 °F⇑

    Showers
    Likely and
    Patchy Dense
    Fog

  • Sunday

    Sunday: Showers likely, mainly before 10am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 58. Southwest wind 6 to 8 mph. Chance of precipitation is 60%.

    High: 58 °F

    Showers
    Likely and
    Patchy Fog
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 55. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 55.

    High: 55 °F

    Cloudy

Detailed Forecast

This Afternoon
Patchy fog. Otherwise, cloudy, with a high near 42. South wind around 7 mph.
Tonight
Patchy drizzle with a chance of showers between 10pm and 4am, then showers likely with areas of drizzle after 4am. The drizzle could be heavy at times. Patchy dense fog. Otherwise, cloudy, with a temperature rising to around 45 by 1am. Southwest wind 6 to 8 mph. Chance of precipitation is 60%.
Sunday
Showers likely, mainly before 10am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 58. Southwest wind 6 to 8 mph. Chance of precipitation is 60%.
Sunday Night
Partly cloudy, with a low around 33. Calm wind.
Monday
Sunny, with a high near 55. Calm wind becoming southwest 5 to 8 mph in the morning.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Mostly sunny, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Cloudy, with a high near 55.
Wednesday Night
A 30 percent chance of showers. Cloudy, with a low around 45.
Thursday
Showers likely. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.
Thursday Night
A chance of rain and snow showers. Partly cloudy, with a low around 27. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 42.
Basemap Options
Click map to change the forecast location
Loading map...
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:
1:48 pm EST Mar 7, 2026
Forecast Valid:
1pm EST Mar 7, 2026-6pm EDT Mar 13, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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