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Hazardous Weather Conditions

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

A Few Clouds

71°F

22°C

Humidity 96%
Wind Speed SW 5 mph
Barometer 29.96 in (1014.6 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 1 Jul 11:56 pm EDT
Extended Forecast for

Groton / New London Airport CT

Extreme Heat Watch July 3, 09:00pm until July 4, 09:00pm
Extreme Heat Warning July 2, 12:59am until July 3, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch
Extreme Heat Warning
  •  
    Extreme Heat Warning July 2, 12:59am until July 3, 09:00pm

    NOW until 9:00pm Fri

    Extreme Heat Warning

  • Overnight

    Low: 69 °F

    Isolated
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, sunny, with a high near 92. Heat index values as high as 103. Southwest wind 6 to 10 mph, with gusts as high as 22 mph.

    High: 92 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 71. Southwest wind around 6 mph becoming calm in the evening.

    Low: 71 °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 91. Heat index values as high as 101. Light west wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 20%.

    High: 91 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

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

    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 90.

    High: 90 °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

  • Sunday

    Sunday: A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Overnight
Isolated showers and thunderstorms. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 69. Southwest wind 3 to 5 mph. Chance of precipitation is 20%.
Thursday
Patchy fog before 9am. Otherwise, sunny, with a high near 92. Heat index values as high as 103. Southwest wind 6 to 10 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 71. Southwest wind around 6 mph becoming calm in the evening.
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 91. Heat index values as high as 101. 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. Light northwest wind.
Independence Day
A 40 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 90.
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 81.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 66.
Monday
A 40 percent chance of showers. Partly sunny, with a high near 77.
Monday Night
Mostly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Groton / New London Airport CT
 41.33°N 72.02°W (Elev. 43 ft)
Last Update:
8:17 pm EDT Jul 1, 2026
Forecast Valid:
12am EDT Jul 2, 2026-6pm EDT Jul 8, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation