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 74%
Wind Speed S 8 mph
Barometer 29.97 in (1014.8 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 1 Jul 2:56 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, 03:56pm until July 3, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch
Extreme Heat Warning
  •  
    Extreme Heat Warning July 1, 03:56pm until July 3, 09:00pm

    NOW until 9:00pm Fri

    Extreme Heat Warning

  • This Afternoon

    High: 78 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 69. Southwest wind 6 to 10 mph.

    Low: 69 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 94. Southwest wind 5 to 11 mph.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72. Southwest wind 5 to 9 mph becoming calm after midnight.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 93. Light west wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 20%.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

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

    Low: 72 °F

    Mostly Clear

  • Independence Day

    Independence Day: A 40 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 92.

    High: 92 °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 69.

    Low: 69 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 78. Southwest wind around 13 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 69. Southwest wind 6 to 10 mph.
Thursday
Sunny, with a high near 94. Southwest wind 5 to 11 mph.
Thursday Night
Mostly clear, with a low around 72. Southwest wind 5 to 9 mph becoming calm after midnight.
Friday
A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 93. Light west wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 72.
Independence Day
A 40 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 92.
Saturday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69.
Sunday
A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 82.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 66.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 78.
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 64.
Wednesday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New London CT
 41.36°N 72.08°W (Elev. 79 ft)
Last Update:
2:10 pm EDT Jul 1, 2026
Forecast Valid:
3pm EDT Jul 1, 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