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.

Fair

73°F

23°C

Humidity 94%
Wind Speed SW 5 mph
Barometer 30.13 in (1020.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 5 Aug 7:56 pm EDT
Extended Forecast for

2 Miles SSE Ledyard CT

Heat Advisory August 6, 11:00am until August 7, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 73. Light southwest wind.

    Low: 73 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 84. Southwest wind 5 to 9 mph.

    High: 84 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72. Southwest wind 3 to 6 mph.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Heat index values as high as 95. Southwest wind 3 to 8 mph.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 72. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a steady temperature around 73. Light southwest wind.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 84. Southwest wind 5 to 9 mph.
Thursday Night
Mostly clear, with a low around 72. Southwest wind 3 to 6 mph.
Friday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Heat index values as high as 95. Southwest wind 3 to 8 mph.
Friday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 72. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 71.
Sunday
Sunny, with a high near 85.
Sunday Night
Mostly clear, with a low around 66.
Monday
Sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
A 40 percent chance of showers. Mostly sunny, with a high near 85.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Ledyard CT
 41.42°N 71.98°W (Elev. 269 ft)
Last Update:
2:06 pm EDT Aug 5, 2026
Forecast Valid:
8pm EDT Aug 5, 2026-6pm EDT Aug 12, 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