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

72°F

22°C

Humidity 71%
Wind Speed SW 7 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 30 Jun 10:56 pm EDT
Extended Forecast for

New London 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

  • Tonight

    Tonight: A slight chance of showers, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 68. Southwest wind around 7 mph. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 90. Southwest wind 9 to 13 mph, with gusts as high as 23 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 70. Southwest wind 5 to 8 mph.

    Low: 70 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 97. Heat index values as high as 109. Southwest wind 6 to 11 mph.

    High: 97 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. Southwest wind around 6 mph becoming calm in the evening.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Independence Day

    Independence Day: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96.

    High: 96 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 68. Southwest wind around 7 mph. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 90. Southwest wind 9 to 13 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 70. Southwest wind 5 to 8 mph.
Thursday
Sunny, with a high near 97. Heat index values as high as 109. Southwest wind 6 to 11 mph.
Thursday Night
Mostly clear, with a low around 73. Southwest wind around 6 mph becoming calm in the evening.
Friday
Sunny and hot, with a high near 100.
Friday Night
Mostly clear, with a low around 74.
Independence Day
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96.
Saturday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 67.
Monday
A 40 percent chance of showers. Partly sunny, with a high near 84.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 66.
Tuesday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New London CT
 41.35°N 72.11°W (Elev. 98 ft)
Last Update:
7:34 pm EDT Jun 30, 2026
Forecast Valid:
11pm EDT Jun 30, 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