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

68°F

20°C

Humidity 84%
Wind Speed Calm
Barometer 30.00 in (1015.9 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 1 Jul 1:56 am EDT
Extended Forecast for

Niantic CT

Extreme Heat Watch July 3, 09:00pm until July 4, 09:00pm
Extreme Heat Warning July 1, 12:00pm until July 3, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch
Extreme Heat Warning

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a steady temperature around 71. Southwest wind around 7 mph.

    Low: 71 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms before 8am. Sunny, with a high near 85. Southwest wind 8 to 11 mph, with gusts as high as 21 mph.

    High: 85 °F

    Chance
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Southwest wind 5 to 8 mph.

    Low: 69 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Sunny, with a high near 92. Heat index values as high as 103. Southwest wind 7 to 10 mph.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 73. Southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 73 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 97.

    High: 97 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Independence Day

    Independence Day: A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 93.

    High: 93 °F

    Sunny then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a steady temperature around 71. Southwest wind around 7 mph.
Wednesday
A 30 percent chance of showers and thunderstorms before 8am. Sunny, with a high near 85. Southwest wind 8 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Southwest wind 5 to 8 mph.
Thursday
Sunny, with a high near 92. Heat index values as high as 103. Southwest wind 7 to 10 mph.
Thursday Night
Clear, with a low around 73. Southwest wind 5 to 7 mph becoming calm in the evening.
Friday
Sunny, with a high near 97.
Friday Night
Mostly clear, with a low around 72.
Independence Day
A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 93.
Saturday Night
A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 69.
Sunday
A 40 percent chance of showers after 2pm. Partly sunny, with a high near 83.
Sunday Night
Showers likely. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Monday
Showers likely. Partly sunny, with a high near 78. Chance of precipitation is 60%.
Monday Night
Showers likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Niantic CT
 41.31°N 72.21°W (Elev. 30 ft)
Last Update:
2:37 am EDT Jul 1, 2026
Forecast Valid:
2am EDT Jul 1, 2026-6pm EDT Jul 7, 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