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

79°F

26°C

Humidity 94%
Wind Speed S 10 mph
Barometer 29.98 in (1015.3 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 16 Jul 3:56 pm EDT
Extended Forecast for

Niantic CT

Heat Advisory July 16, 04:15pm until July 17, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 16, 04:15pm until July 17, 10:00pm

    NOW until 10:00pm Thu

    Heat Advisory

  • Tonight

    Low: 73 °F

    Patchy Fog
    then Slight
    Chance
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 87. Heat index values as high as 98. Southwest wind 6 to 9 mph.

    High: 87 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 70. Southwest wind around 8 mph becoming northwest after midnight.

    Low: 70 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 86. Northwest wind 9 to 11 mph.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. Light north wind.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 8am. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.

    High: 80 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms after 2am. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 73. South wind around 6 mph becoming calm in the evening.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 87. Heat index values as high as 98. Southwest wind 6 to 9 mph.
Thursday Night
Partly cloudy, with a low around 70. Southwest wind around 8 mph becoming northwest after midnight.
Friday
Sunny, with a high near 86. Northwest wind 9 to 11 mph.
Friday Night
Mostly clear, with a low around 63. Light north wind.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 67.
Sunday
A chance of showers, with thunderstorms also possible after 8am. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly cloudy, with a low around 67.
Wednesday
Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Niantic CT
 41.34°N 72.2°W (Elev. 92 ft)
Last Update:
2:07 pm EDT Jul 16, 2025
Forecast Valid:
4pm EDT Jul 16, 2025-6pm EDT Jul 23, 2025
 
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