National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

65°F

18°C

Humidity 93%
Wind Speed SW 8 mph
Barometer 29.80 in (1009.2 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 14 Oct 6:56 am EDT
Extended Forecast for

Conning Towers-Nautilus Park CT

  • Today

    Today: A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 78. West wind 7 to 9 mph.

    High: 78 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 49. Northwest wind 5 to 7 mph.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 64. North wind 3 to 8 mph.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers after 2am. Increasing clouds, with a low around 47. Calm wind becoming southeast around 5 mph after midnight.

    Low: 47 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 5pm. High near 69. Southeast wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 69 °F

    Showers

  • Friday Night

    Friday Night: Showers likely before 2am. Mostly cloudy, with a low around 40. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Showers
    Likely

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 78. West wind 7 to 9 mph.
Tonight
Mostly clear, with a low around 49. Northwest wind 5 to 7 mph.
Thursday
Sunny, with a high near 64. North wind 3 to 8 mph.
Thursday Night
A 50 percent chance of showers after 2am. Increasing clouds, with a low around 47. Calm wind becoming southeast around 5 mph after midnight.
Friday
Showers, with thunderstorms also possible after 5pm. High near 69. Southeast wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers likely before 2am. Mostly cloudy, with a low around 40. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Sunny, with a high near 52.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 40.
Monday
Sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Conning Towers-Nautilus Park CT
 41.39°N 72.07°W (Elev. 200 ft)
Last Update:
7:09 am EDT Oct 14, 2026
Forecast Valid:
7am EDT Oct 14, 2026-6pm EDT Oct 20, 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