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

41°F

5°C

Humidity 100%
Wind Speed Vrbl 5 mph
Barometer 29.83 in (1010.0 mb)
Dewpoint 41°F (5°C)
Visibility 2.50 mi
Wind Chill38°F (3°C)
Last update 8 Mar 1:56 am EDT
Extended Forecast for

Groton CT

Dense Fog Advisory March 8, 01:22am until March 8, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory March 8, 01:22am until March 8, 09:00am

    NOW until 9:00am Sun

    Dense Fog Advisory

  • Overnight

    Low: 43 °F

    Chance
    Showers and
    Areas Fog

  • Sunday

    Sunday: A 40 percent chance of showers, mainly before 10am. Patchy fog before 10am. Otherwise, cloudy, with a high near 51. Southwest wind around 11 mph.

    High: 51 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 37. West wind 5 to 8 mph.

    Low: 37 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 49. Light west wind becoming south 6 to 11 mph in the morning.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38. Southwest wind 5 to 9 mph becoming light after midnight.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 51.

    High: 51 °F

    Cloudy

Detailed Forecast

Overnight
A 50 percent chance of showers. Areas of fog. Otherwise, cloudy, with a steady temperature around 43. Southwest wind around 11 mph.
Sunday
A 40 percent chance of showers, mainly before 10am. Patchy fog before 10am. Otherwise, cloudy, with a high near 51. Southwest wind around 11 mph.
Sunday Night
Partly cloudy, with a low around 37. West wind 5 to 8 mph.
Monday
Sunny, with a high near 49. Light west wind becoming south 6 to 11 mph in the morning.
Monday Night
Mostly clear, with a low around 38. Southwest wind 5 to 9 mph becoming light after midnight.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Cloudy, with a high near 51.
Wednesday Night
A 30 percent chance of showers after 1am. Cloudy, with a low around 47.
Thursday
Showers likely. Cloudy, with a high near 50. Breezy. Chance of precipitation is 70%.
Thursday Night
Partly cloudy, with a low around 31.
Friday
Partly sunny, with a high near 42.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 38. Breezy.
Saturday
Sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Groton CT
 41.32°N 72.06°W (Elev. 3 ft)
Last Update:
12:47 am EST Mar 8, 2026
Forecast Valid:
1am EST Mar 8, 2026-6pm EDT Mar 14, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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