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

62°F

17°C

Humidity 100%
Wind Speed S 3 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 62°F (17°C)
Visibility 0.25 mi
Last update 18 Jun 6:56 am EDT
Extended Forecast for

2 Miles WSW Ledyard CT

Dense Fog Advisory June 18, 07:45am until June 18, 09:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory June 18, 07:45am until June 18, 09:00am

    NOW until 9:00am Wed

    Dense Fog Advisory

  • Today

    High: 74 °F

    Chance
    Showers and
    Dense Fog

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Cloudy, with a low around 65. Light south wind. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    Showers

  • Juneteenth

    Juneteenth: A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Southwest wind 5 to 11 mph, with gusts as high as 22 mph.

    High: 85 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 64. Southwest wind 8 to 10 mph. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 82. Northwest wind around 10 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 65.

    Low: 65 °F

    Mostly Cloudy

Detailed Forecast

Today
A chance of showers before 11am, then a chance of showers and thunderstorms after 2pm. Widespread dense fog, mainly before 9am. Otherwise, cloudy, with a high near 74. South wind 3 to 7 mph. Chance of precipitation is 50%.
Tonight
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Cloudy, with a low around 65. Light south wind. Chance of precipitation is 30%.
Juneteenth
A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Southwest wind 5 to 11 mph, with gusts as high as 22 mph.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 64. Southwest wind 8 to 10 mph. Chance of precipitation is 40%.
Friday
Sunny, with a high near 82. Northwest wind around 10 mph.
Friday Night
Mostly clear, with a low around 61.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Mostly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 67.
Monday
Mostly sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 69.
Tuesday
Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Ledyard CT
 41.42°N 72.03°W (Elev. 233 ft)
Last Update:
6:49 am EDT Jun 18, 2025
Forecast Valid:
7am EDT Jun 18, 2025-6pm EDT Jun 24, 2025
 
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