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

55°F

13°C

Humidity 69%
Wind Speed NE 14 G 21 mph
Barometer 30.48 in (1032.0 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 23 Sep 7:56 pm EDT
Extended Forecast for

Hadlyme CT

  • Tonight

    Tonight: Mostly clear, with a low around 48. Northeast wind 11 to 14 mph.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 66. Northeast wind 15 to 17 mph.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50. North wind 14 to 16 mph, with gusts as high as 28 mph.

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: A 50 percent chance of showers. Mostly cloudy, with a high near 64. Breezy, with a north wind around 20 mph, with gusts as high as 31 mph.

    High: 64 °F

    Chance
    Showers and
    Breezy

  • Friday Night

    Friday Night: Showers likely. Cloudy, with a low around 52. Breezy, with a north wind 18 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Showers
    Likely and
    Breezy

  • Saturday

    Saturday: Showers likely. Mostly cloudy, with a high near 63. Breezy. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 63 °F

    Showers
    Likely and
    Breezy

  • Saturday Night

    Saturday Night: Showers likely. Cloudy, with a low around 53. Chance of precipitation is 70%.

    Low: 53 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.

    High: 63 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 48. Northeast wind 11 to 14 mph.
Thursday
Mostly sunny, with a high near 66. Northeast wind 15 to 17 mph.
Thursday Night
Mostly cloudy, with a low around 50. North wind 14 to 16 mph, with gusts as high as 28 mph.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 64. Breezy, with a north wind around 20 mph, with gusts as high as 31 mph.
Friday Night
Showers likely. Cloudy, with a low around 52. Breezy, with a north wind 18 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Showers likely. Mostly cloudy, with a high near 63. Breezy. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday Night
Showers likely. Cloudy, with a low around 53. Chance of precipitation is 70%.
Sunday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 53.
Monday
Mostly cloudy, with a high near 66.
Monday Night
Mostly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 69.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hadlyme CT
 41.42°N 72.33°W (Elev. 207 ft)
Last Update:
5:46 pm EDT Sep 23, 2026
Forecast Valid:
8pm EDT Sep 23, 2026-6pm EDT Sep 30, 2026
 
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