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

39°F

4°C

Humidity 100%
Wind Speed W 3 mph
Barometer 29.92 in (1013.1 mb)
Dewpoint 39°F (4°C)
Visibility 0.25 mi
Last update 7 Mar 8:56 pm EST
Extended Forecast for

Old Saybrook Center CT

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

    NOW until 9:00am Sun

    Dense Fog Advisory

  • Tonight

    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 54. West wind around 10 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 36. West wind 5 to 7 mph.

    Low: 36 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 53. Light west wind becoming southwest 6 to 11 mph in the morning.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 38. Southwest wind 3 to 8 mph.

    Low: 38 °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 42.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 53.

    High: 53 °F

    Cloudy

Detailed Forecast

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 low around 42. Southwest wind 8 to 11 mph. Chance of precipitation is 60%.
Sunday
Showers likely, mainly before 10am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 54. West wind around 10 mph. Chance of precipitation is 60%.
Sunday Night
Partly cloudy, with a low around 36. West wind 5 to 7 mph.
Monday
Sunny, with a high near 53. Light west wind becoming southwest 6 to 11 mph in the morning.
Monday Night
Partly cloudy, with a low around 38. Southwest wind 3 to 8 mph.
Tuesday
Mostly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 42.
Wednesday
Cloudy, with a high near 53.
Wednesday Night
A 30 percent chance of showers. Cloudy, with a low around 47.
Thursday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 53. Breezy. Chance of precipitation is 60%.
Thursday Night
A chance of rain and snow showers. Partly cloudy, with a low around 31. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 41.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 36.
Saturday
Mostly cloudy, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Old Saybrook Center CT
 41.29°N 72.39°W (Elev. 89 ft)
Last Update:
3:40 pm EST Mar 7, 2026
Forecast Valid:
9pm EST Mar 7, 2026-6pm EDT Mar 14, 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