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

60°F

16°C

Humidity 96%
Wind Speed Calm
Barometer 30.14 in (1020.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 5 Aug 5:56 am EDT
Extended Forecast for

Conning Towers-Nautilus Park CT

  • Today

    Today: Mostly sunny, with a high near 84. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Tonight

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

    Low: 68 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm. Cloudy through mid morning, then gradual clearing, with a high near 87. Heat index values as high as 99. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 87 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • 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 89. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 89 °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 87.

    High: 87 °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 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 84. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tonight
Increasing clouds, with a low around 68. Calm wind.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Cloudy through mid morning, then gradual clearing, with a high near 87. Heat index values as high as 99. Calm 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 89. 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 87.
Saturday Night
Partly cloudy, with a low around 72.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 69.
Monday
Sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Conning Towers-Nautilus Park CT
 41.39°N 72.1°W (Elev. 105 ft)
Last Update:
5:07 am EDT Aug 5, 2026
Forecast Valid:
6am EDT Aug 5, 2026-6pm EDT Aug 11, 2026
 
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