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.

Partly Cloudy

75°F

24°C

Humidity 88%
Wind Speed SW 7 mph
Barometer 29.93 in (1013.4 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 2 Jul 1:56 am EDT
Extended Forecast for

3 Miles NNW Uncasville CT

Extreme Heat Watch July 3, 09:00pm until July 4, 09:00pm
Extreme Heat Warning July 2, 02:30am until July 3, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch
Extreme Heat Warning
  •  
    Extreme Heat Warning July 2, 02:30am until July 3, 09:00pm

    NOW until 9:00pm Fri

    Extreme Heat Warning

  • Overnight

    Low: 73 °F

    Isolated
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, sunny, with a high near 99. Heat index values as high as 116. Southwest wind 5 to 10 mph, with gusts as high as 22 mph.

    High: 99 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. Southwest wind 5 to 8 mph becoming calm in the evening.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 99. Heat index values as high as 111. Light west wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 30%.

    High: 99 °F

    Sunny then
    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 75. Northwest wind 3 to 5 mph.

    Low: 75 °F

    Chance
    Showers then
    Mostly Clear

  • Independence Day

    Independence Day: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 98.

    High: 98 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Overnight
Isolated showers and thunderstorms. Patchy fog. Otherwise, mostly cloudy, with a low around 73. Light southwest wind. Chance of precipitation is 20%.
Thursday
Patchy fog before 9am. Otherwise, sunny, with a high near 99. Heat index values as high as 116. Southwest wind 5 to 10 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 75. Southwest wind 5 to 8 mph becoming calm in the evening.
Friday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 99. Heat index values as high as 111. Light west wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 75. Northwest wind 3 to 5 mph.
Independence Day
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 98.
Saturday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71.
Sunday
A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 89.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 66.
Monday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 50%.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Uncasville CT
 41.5°N 72.13°W (Elev. 98 ft)
Last Update:
8:17 pm EDT Jul 1, 2026
Forecast Valid:
2am EDT Jul 2, 2026-6pm EDT Jul 8, 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