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

28°F

-2°C

Humidity 88%
Wind Speed Calm
Barometer 30.17 in (1021.6 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 19 Nov 2:56 am EST
Extended Forecast for

Hadlyme CT

  • Overnight

    Overnight: A 30 percent chance of snow after 4am. Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Chance Snow

  • Wednesday

    Wednesday: A chance of snow before 7am, then a slight chance of rain between 7am and 10am. Cloudy through mid morning, then gradual clearing, with a high near 48. Light north wind. Chance of precipitation is 30%.

    High: 48 °F

    Chance
    Rain/Snow
    then Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 29. Light and variable wind.

    Low: 29 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 48. Light and variable wind.

    High: 48 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 32. Calm wind.

    Low: 32 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, with a high near 53.

    High: 53 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: A 30 percent chance of rain before 1pm. Partly sunny, with a high near 52.

    High: 52 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of snow after 4am. Mostly cloudy, with a low around 32. Calm wind.
Wednesday
A chance of snow before 7am, then a slight chance of rain between 7am and 10am. Cloudy through mid morning, then gradual clearing, with a high near 48. Light north wind. Chance of precipitation is 30%.
Wednesday Night
Increasing clouds, with a low around 29. Light and variable wind.
Thursday
Partly sunny, with a high near 48. Light and variable wind.
Thursday Night
Increasing clouds, with a low around 32. Calm wind.
Friday
Mostly cloudy, with a high near 53.
Friday Night
A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 37.
Saturday
A 30 percent chance of rain before 1pm. Partly sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 50.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 54.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hadlyme CT
 41.38°N 72.34°W (Elev. 69 ft)
Last Update:
1:50 am EST Nov 19, 2025
Forecast Valid:
3am EST Nov 19, 2025-6pm EST Nov 25, 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