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.

Mostly Cloudy

83°F

28°C

Humidity 77%
Wind Speed W 7 mph
Barometer 29.92 in (1013.0 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 9 Aug 3:56 pm EDT
Extended Forecast for

2 Miles SSE Hadlyme CT

Heat Advisory August 9, 04:23pm until August 9, 07:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory August 9, 04:23pm until August 9, 07:00pm

    NOW until 7:00pm Sun

    Heat Advisory

  • Tonight

    Low: 64 °F

    Clear

  • Monday

    Monday: A slight chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Sunny, with a high near 88. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 30%.

    High: 88 °F

    Sunny then
    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 69. Southwest wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Chance
    Showers then
    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. West wind 5 to 8 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 64. West wind around 5 mph becoming calm in the evening.
Monday
A slight chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Sunny, with a high near 88. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
Monday Night
A 40 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 69. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 86. West wind 5 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 63. Calm wind.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
A 40 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 66.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Mostly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Hadlyme CT
 41.38°N 72.34°W (Elev. 69 ft)
Last Update:
2:26 pm EDT Aug 9, 2026
Forecast Valid:
4pm EDT Aug 9, 2026-6pm EDT Aug 16, 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