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 S 3 mph
Barometer 30.09 in (1018.8 mb)
Dewpoint 38°F (3°C)
Visibility 0.75 mi
Last update 7 Mar 1:56 pm EST
Extended Forecast for

Stonington 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 40. South wind around 8 mph.

    High: 40 °F

    Patchy Fog

  • Tonight

    Tonight: Areas of 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 44 by 5am. Southwest wind 8 to 10 mph. Chance of precipitation is 60%.

    Low: 40 °F⇑

    Showers
    Likely and
    Patchy Dense
    Fog

  • Sunday

    Sunday: Showers likely, mainly before 10am. Patchy fog before 10am. Otherwise, cloudy, with a high near 54. West wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 54 °F

    Showers
    Likely and
    Patchy Fog
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34. West wind 3 to 5 mph.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 52. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 52 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 56.

    High: 56 °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 52.

    High: 52 °F

    Cloudy

Detailed Forecast

This Afternoon
Patchy fog. Otherwise, cloudy, with a high near 40. South wind around 8 mph.
Tonight
Areas of 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 44 by 5am. Southwest wind 8 to 10 mph. Chance of precipitation is 60%.
Sunday
Showers likely, mainly before 10am. Patchy fog before 10am. Otherwise, cloudy, with a high near 54. West wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Sunday Night
Partly cloudy, with a low around 34. West wind 3 to 5 mph.
Monday
Sunny, with a high near 52. Calm wind becoming southwest 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 36.
Tuesday
Mostly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Cloudy, with a high near 52.
Wednesday Night
A 30 percent chance of showers. Cloudy, with a low around 45.
Thursday
Showers likely. Mostly cloudy, with a high near 54. Chance of precipitation is 60%.
Thursday Night
A chance of rain and snow showers. Partly cloudy, with a low around 29. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Stonington CT
 41.35°N 71.93°W (Elev. 3 ft)
Last Update:
2:04 pm EST Mar 7, 2026
Forecast Valid:
2pm EST Mar 7, 2026-6pm EDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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