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

Uncasville-Oxoboxo Valley CT

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

  • Tonight

    Tonight: Increasing clouds, with a steady temperature around 74. Calm wind.

    Low: 74 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 87. Heat index values as high as 97. Light south wind becoming southwest 5 to 9 mph in the morning.

    High: 87 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. South wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Heat index values as high as 98. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 88 °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 73. Light southwest wind. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 87.

    High: 87 °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 87.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a steady temperature around 74. Calm wind.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 87. Heat index values as high as 97. Light south wind becoming southwest 5 to 9 mph in the morning.
Thursday Night
Mostly clear, with a low around 73. South 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. Heat index values as high as 98. Calm wind becoming southwest 5 to 8 mph in the morning.
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 73. Light southwest wind. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 71.
Sunday
Sunny, with a high near 87.
Sunday Night
Mostly clear, with a low around 67.
Monday
Sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
A 40 percent chance of showers. Mostly sunny, with a high near 86.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Uncasville-Oxoboxo Valley CT
 41.44°N 72.12°W (Elev. 138 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