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

32°F

0°C

Humidity 79%
Wind Speed Calm
Barometer 30.09 in (1019.0 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 7 Dec 8:56 am EST
Extended Forecast for

Hadlyme CT

  • Today

    Today: Partly sunny, with a high near 40. Light and variable wind.

    High: 40 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 21. Wind chill values between 15 and 20. Light and variable wind becoming northwest 8 to 13 mph in the evening. Winds could gust as high as 24 mph.

    Low: 21 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 28. Wind chill values between 10 and 15. North wind 9 to 15 mph, with gusts as high as 30 mph.

    High: 28 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 12. North wind around 6 mph becoming calm after midnight.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 39. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 39 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of rain. Mostly cloudy, with a high near 46.

    High: 46 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

  • Thursday

    Thursday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 40. Light and variable wind.
Tonight
Partly cloudy, with a low around 21. Wind chill values between 15 and 20. Light and variable wind becoming northwest 8 to 13 mph in the evening. Winds could gust as high as 24 mph.
Monday
Mostly sunny, with a high near 28. Wind chill values between 10 and 15. North wind 9 to 15 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 12. North wind around 6 mph becoming calm after midnight.
Tuesday
Increasing clouds, with a high near 39. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 46.
Wednesday Night
A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 33.
Thursday
Partly sunny, with a high near 42.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 40%.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 22.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hadlyme CT
 41.4°N 72.34°W (Elev. 299 ft)
Last Update:
7:42 am EST Dec 7, 2025
Forecast Valid:
9am EST Dec 7, 2025-6pm EST Dec 13, 2025
 
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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