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

25°F

-4°C

Humidity 58%
Wind Speed W 10 mph
Barometer 30.17 in (1021.5 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 15 Dec 9:56 pm EST
Extended Forecast for

Hadlyme CT

  • Tonight

    Tonight: Mostly cloudy, with a low around 17. Wind chill values between 10 and 15. West wind around 6 mph.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 32. Wind chill values between 10 and 20. Southwest wind 3 to 5 mph.

    High: 32 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23. Southwest wind 3 to 7 mph.

    Low: 23 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42. Wind chill values between 20 and 30. Southwest wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 42 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25. West wind around 6 mph becoming calm in the evening.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Rain, mainly after 1am. Low around 41. Chance of precipitation is 90%.

    Low: 41 °F

    Chance Rain
    then Rain

  • Friday

    Friday: Rain likely before 1pm. Mostly cloudy, with a high near 53. Chance of precipitation is 70%.

    High: 53 °F

    Rain Likely

  • Friday Night

    Friday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 17. Wind chill values between 10 and 15. West wind around 6 mph.
Tuesday
Sunny, with a high near 32. Wind chill values between 10 and 20. Southwest wind 3 to 5 mph.
Tuesday Night
Partly cloudy, with a low around 23. Southwest wind 3 to 7 mph.
Wednesday
Mostly sunny, with a high near 42. Wind chill values between 20 and 30. Southwest wind 8 to 11 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 25. West wind around 6 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 52.
Thursday Night
Rain, mainly after 1am. Low around 41. Chance of precipitation is 90%.
Friday
Rain likely before 1pm. Mostly cloudy, with a high near 53. Chance of precipitation is 70%.
Friday Night
Partly cloudy, with a low around 22.
Saturday
Mostly sunny, with a high near 39.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 30.
Sunday
Partly sunny, with a high near 45.
Sunday Night
Partly cloudy, with a low around 25.
Monday
Mostly sunny, with a high near 38.
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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:
6:41 pm EST Dec 15, 2025
Forecast Valid:
10pm EST Dec 15, 2025-6pm EST Dec 22, 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