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

34°F

1°C

Humidity 97%
Wind Speed W 6 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 33°F (1°C)
Visibility 3.00 mi
Wind Chill29°F (-2°C)
Last update 17 Feb 8:56 pm EST
Extended Forecast for

Conning Towers-Nautilus Park CT

Dense Fog Advisory February 17, 10:00pm until February 18, 10:00am
Click here for hazard details and duration
Dense Fog Advisory

  • Tonight

    Tonight: Widespread dense fog, mainly between 1am and 4am. Otherwise, mostly cloudy, with a low around 34. West wind around 5 mph.

    Low: 34 °F

    Mostly Cloudy
    then Dense
    Fog

  • Wednesday

    Wednesday: A chance of drizzle before 10am, then rain, mainly after 10am. The drizzle could be heavy at times. Areas of dense fog before 10am. High near 40. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 40 °F

    Rain and
    Areas Dense
    Fog

  • Wednesday Night

    Wednesday Night: Rain before 1am, then a slight chance of snow between 1am and 4am. Low around 32. Northeast wind 6 to 8 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 32 °F

    Rain then
    Chance
    Rain/Snow

  • Thursday

    Thursday: Partly sunny, with a high near 40. Northeast wind 6 to 8 mph becoming southeast in the afternoon.

    High: 40 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of snow after 1am, mixing with rain after 4am. Mostly cloudy, with a low around 30. East wind around 6 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Friday

    Friday: A chance of snow before 7am, then a chance of rain and snow between 7am and 1pm, then rain after 1pm. High near 40. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Chance
    Rain/Snow
    then
    Rain/Snow

  • Friday Night

    Friday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 34. Chance of precipitation is 70%.

    Low: 34 °F

    Rain Likely

  • Saturday

    Saturday: Mostly cloudy, with a high near 42.

    High: 42 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Widespread dense fog, mainly between 1am and 4am. Otherwise, mostly cloudy, with a low around 34. West wind around 5 mph.
Wednesday
A chance of drizzle before 10am, then rain, mainly after 10am. The drizzle could be heavy at times. Areas of dense fog before 10am. High near 40. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain before 1am, then a slight chance of snow between 1am and 4am. Low around 32. Northeast wind 6 to 8 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday
Partly sunny, with a high near 40. Northeast wind 6 to 8 mph becoming southeast in the afternoon.
Thursday Night
A slight chance of snow after 1am, mixing with rain after 4am. Mostly cloudy, with a low around 30. East wind around 6 mph. Chance of precipitation is 20%.
Friday
A chance of snow before 7am, then a chance of rain and snow between 7am and 1pm, then rain after 1pm. High near 40. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 34. Chance of precipitation is 70%.
Saturday
Mostly cloudy, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
A 50 percent chance of snow. Mostly cloudy, with a high near 37.
Sunday Night
Snow likely. Mostly cloudy, with a low around 30. Blustery. Chance of precipitation is 60%.
Monday
A 40 percent chance of snow. Mostly cloudy, with a high near 36. Breezy.
Monday Night
Mostly cloudy, with a low around 23. Blustery.
Tuesday
Mostly sunny, with a high near 31.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Conning Towers-Nautilus Park CT
 41.36°N 72.08°W (Elev. 79 ft)
Last Update:
3:29 pm EST Feb 17, 2026
Forecast Valid:
9pm EST Feb 17, 2026-6pm EST Feb 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation