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.

Overcast

29°F

-2°C

Humidity 69%
Wind Speed N 6 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 6 Dec 2:56 am EST
Extended Forecast for

Hadlyme CT

  • Overnight

    Overnight: A 20 percent chance of light snow after 4am. Cloudy, with a steady temperature around 29. Calm wind.

    Low: 29 °F

    Slight Chance
    Light Snow

  • Saturday

    Saturday: A chance of drizzle, snow, and freezing rain before 11am, then a chance of drizzle between 11am and 1pm. Mostly cloudy, with a high near 39. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 39 °F

    Chance Wintry
    Mix then
    Chance
    Drizzle

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25. Light northwest wind.

    Low: 25 °F

    Partly Cloudy

  • Sunday

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

    High: 40 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22. Light west wind becoming northwest 6 to 11 mph after midnight. Winds could gust as high as 23 mph.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 30.

    High: 30 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of light snow after 4am. Cloudy, with a steady temperature around 29. Calm wind.
Saturday
A chance of drizzle, snow, and freezing rain before 11am, then a chance of drizzle between 11am and 1pm. Mostly cloudy, with a high near 39. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 25. Light northwest wind.
Sunday
Partly sunny, with a high near 40. Light and variable wind.
Sunday Night
Mostly cloudy, with a low around 22. Light west wind becoming northwest 6 to 11 mph after midnight. Winds could gust as high as 23 mph.
Monday
Sunny, with a high near 30.
Monday Night
Partly cloudy, with a low around 12.
Tuesday
Mostly sunny, with a high near 37.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 46.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 33.
Thursday
A 30 percent chance of rain. Partly sunny, with a high near 42.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 24.
Friday
A 30 percent chance of snow. Partly sunny, with a high near 37.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hadlyme CT
 41.4°N 72.34°W (Elev. 299 ft)
Last Update:
12:53 am EST Dec 6, 2025
Forecast Valid:
3am EST Dec 6, 2025-6pm EST Dec 12, 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