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

61°F

16°C

Humidity 78%
Wind Speed S 7 mph
Barometer 30.37 in (1028.4 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 15 Sep 7:56 pm EDT
Extended Forecast for

Conning Towers-Nautilus Park CT

  • Tonight

    Tonight: Mostly clear, with a low around 59. Light and variable wind.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 65. Southwest wind around 6 mph becoming calm in the evening.

    Low: 65 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 75. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 75 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 67. South wind around 8 mph.

    Low: 67 °F

    Chance
    Showers

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 75.

    High: 75 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 59. Light and variable wind.
Wednesday
Mostly sunny, with a high near 72. Calm wind becoming southwest 5 to 9 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 65. Southwest wind around 6 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 75. Calm wind becoming south 5 to 9 mph in the afternoon.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 67. South wind around 8 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 59.
Sunday
Showers likely, mainly after 8am. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 61.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 71.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 60.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 70.
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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:
8:23 pm EDT Sep 15, 2026
Forecast Valid:
8pm EDT Sep 15, 2026-6pm EDT Sep 22, 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