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

29°F

-2°C

Humidity 89%
Wind Speed NE 6 mph
Barometer 30.03 in (1016.9 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 23 Nov 7:56 am EST
Extended Forecast for

Hadlyme CT

  • Today

    Today: Mostly sunny, with a high near 46. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 46 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 35. West wind 5 to 8 mph, with gusts as high as 20 mph.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 49. Northwest wind 6 to 13 mph, with gusts as high as 24 mph.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 34. Calm wind.

    Low: 34 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A 30 percent chance of rain after 1pm. Cloudy, with a high near 53. Light southwest wind increasing to 5 to 9 mph in the morning.

    High: 53 °F

    Cloudy then
    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 47. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 59.

    High: 59 °F

    Cloudy then
    Chance Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

  • Thanksgiving Day

    Thanksgiving Day: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 46. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tonight
Partly cloudy, with a low around 35. West wind 5 to 8 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 49. Northwest wind 6 to 13 mph, with gusts as high as 24 mph.
Monday Night
Increasing clouds, with a low around 34. Calm wind.
Tuesday
A 30 percent chance of rain after 1pm. Cloudy, with a high near 53. Light southwest wind increasing to 5 to 9 mph in the morning.
Tuesday Night
Rain. Low around 47. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 59.
Wednesday Night
A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 39.
Thanksgiving Day
Mostly sunny, with a high near 47.
Thursday Night
Mostly clear, with a low around 30.
Friday
Mostly sunny, with a high near 43.
Friday Night
Mostly clear, with a low around 28.
Saturday
Mostly sunny, with a high near 42.
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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:
4:14 am EST Nov 23, 2025
Forecast Valid:
8am EST Nov 23, 2025-6pm EST Nov 29, 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