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

75°F

24°C

Humidity 84%
Wind Speed SW 9 mph
Barometer 29.85 in (1010.8 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 14 Jul 9:56 pm EDT
Extended Forecast for

Ledyard CTSimilar City Names

Heat Advisory July 14, 09:59pm until July 15, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 14, 09:59pm until July 15, 09:00pm

    NOW until 9:00pm Wed

    Heat Advisory

  • Tonight

    Low: 76 °F

    Clear

  • Wednesday

    Wednesday: Patchy smoke before noon, then patchy smoke after 3pm. Increasing clouds, with a high near 94. Heat index values as high as 97. West wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 94 °F

    Patchy Smoke

  • Wednesday Night

    Wednesday Night: Widespread smoke, mainly before 11pm. Partly cloudy, with a low around 69. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 69 °F

    Smoke

  • Thursday

    Thursday: Patchy smoke between 7am and 9am. Mostly sunny, with a high near 90. Light northwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

    High: 90 °F

    Patchy Smoke
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 68. West wind 5 to 7 mph becoming light and variable after midnight.

    Low: 68 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after 2am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 50%.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Tonight
Clear, with a low around 76. West wind 6 to 10 mph, with gusts as high as 22 mph.
Wednesday
Patchy smoke before noon, then patchy smoke after 3pm. Increasing clouds, with a high near 94. Heat index values as high as 97. West wind 8 to 11 mph, with gusts as high as 22 mph.
Wednesday Night
Widespread smoke, mainly before 11pm. Partly cloudy, with a low around 69. Northwest wind 5 to 7 mph becoming calm after midnight.
Thursday
Patchy smoke between 7am and 9am. Mostly sunny, with a high near 90. Light northwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Thursday Night
Mostly clear, with a low around 68. West wind 5 to 7 mph becoming light and variable after midnight.
Friday
Sunny, with a high near 88.
Friday Night
A 30 percent chance of showers after 2am. Partly cloudy, with a low around 64.
Saturday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 50%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 65.
Monday
Mostly sunny, with a high near 85.
Monday Night
A 40 percent chance of showers. Partly cloudy, with a low around 67.
Tuesday
A 40 percent chance of showers. Partly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ledyard CTSimilar City Names
 41.44°N 72°W (Elev. 200 ft)
Last Update:
6:43 pm EDT Jul 14, 2026
Forecast Valid:
9pm EDT Jul 14, 2026-6pm EDT Jul 21, 2026
 
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Additional Resources

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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