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 Calm
Barometer 29.97 in (1015.0 mb)
Dewpoint 62°F (17°C)
Visibility 0.50 mi
Last update 18 Jun 3:56 am EDT
Extended Forecast for

2 Miles NNE East Lyme CT

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

    NOW until 7:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 63 °F

    Showers
    Likely and
    Dense Fog

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 2pm. Widespread dense fog, mainly before 7am. Otherwise, cloudy, with a high near 75. South wind 3 to 6 mph. Chance of precipitation is 60%.

    High: 75 °F

    Showers
    Likely and
    Dense Fog
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Cloudy, with a low around 66. Light south wind. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Juneteenth

    Juneteenth: A 30 percent chance of showers and thunderstorms after 2pm. Some of the storms could be severe. Partly sunny, with a high near 86. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph.

    High: 86 °F

    Partly Sunny
    then Severe
    Thunderstorms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Some of the storms could be severe. Cloudy, then gradually becoming partly cloudy, with a low around 65. Southwest wind around 9 mph. Chance of precipitation is 40%.

    Low: 65 °F

    Severe
    Thunderstorms
    then Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Overnight
Showers likely, mainly after 5am. Widespread dense fog. Otherwise, cloudy, with a low around 63. Calm wind. Chance of precipitation is 60%.
Wednesday
Showers likely, with thunderstorms also possible after 2pm. Widespread dense fog, mainly before 7am. Otherwise, cloudy, with a high near 75. South wind 3 to 6 mph. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Cloudy, with a low around 66. Light south wind. Chance of precipitation is 30%.
Juneteenth
A 30 percent chance of showers and thunderstorms after 2pm. Some of the storms could be severe. Partly sunny, with a high near 86. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Some of the storms could be severe. Cloudy, then gradually becoming partly cloudy, with a low around 65. Southwest wind around 9 mph. Chance of precipitation is 40%.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Mostly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 68.
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 NNE East Lyme CT
 41.4°N 72.22°W (Elev. 292 ft)
Last Update:
3:06 am EDT Jun 18, 2025
Forecast Valid:
4am EDT Jun 18, 2025-6pm EDT Jun 24, 2025
 
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