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

69°F

21°C

Humidity 84%
Wind Speed Calm
Barometer 30.16 in (1021.4 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 5 Aug 7:56 am EDT
Extended Forecast for

Conning Towers-Nautilus Park CT

  • Today

    Today: Mostly sunny, with a high near 83. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 68. Calm wind.

    Low: 68 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Cloudy through mid morning, then gradual clearing, with a high near 86. Heat index values as high as 97. Light south wind becoming southwest 5 to 9 mph in the morning.

    High: 86 °F

    Gradual
    Clearing

  • Thursday Night

    Thursday Night: Mostly clear during the early evening, then becoming mostly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 88 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers between 8pm and midnight. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.

    Low: 71 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 83. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
Increasing clouds, with a low around 68. Calm wind.
Thursday
Cloudy through mid morning, then gradual clearing, with a high near 86. Heat index values as high as 97. Light south wind becoming southwest 5 to 9 mph in the morning.
Thursday Night
Mostly clear during the early evening, then becoming mostly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind becoming southwest 5 to 8 mph in the morning.
Friday Night
A chance of showers between 8pm and midnight. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 72.
Sunday
Sunny, with a high near 87.
Sunday Night
Mostly clear, with a low around 69.
Monday
Sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 85.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Conning Towers-Nautilus Park CT
 41.38°N 72.04°W (Elev. 98 ft)
Last Update:
5:07 am EDT Aug 5, 2026
Forecast Valid:
8am EDT Aug 5, 2026-6pm EDT Aug 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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