National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

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

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

65°F

18°C

Humidity 63%
Wind Speed SE 9 mph
Barometer 30.18 in (1022.0 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 19 Aug 11:56 pm EDT
Extended Forecast for

3 Miles NNE Hadlyme CT

  • Overnight

    Overnight: Mostly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers between 11am and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 71. East wind 5 to 9 mph. Chance of precipitation is 40%.

    High: 71 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 57. Northeast wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 57 °F

    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers before 8am. Partly sunny, with a high near 75. Northeast wind 11 to 14 mph.

    High: 75 °F

    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57. North wind 11 to 14 mph.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 58. Calm wind.
Wednesday
A chance of showers between 11am and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 71. East wind 5 to 9 mph. Chance of precipitation is 40%.
Wednesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 57. Northeast wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 75. Northeast wind 11 to 14 mph.
Thursday Night
Partly cloudy, with a low around 57. North wind 11 to 14 mph.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 63.
Sunday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 79.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 64.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Hadlyme CT
 41.44°N 72.33°W (Elev. 95 ft)
Last Update:
3:14 pm EDT Aug 19, 2025
Forecast Valid:
12am EDT Aug 20, 2025-6pm EDT Aug 26, 2025
 
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