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

20°F

-7°C

Humidity 32%
Wind Speed N 9 mph
Barometer 30.28 in (1025.1 mb)
Dewpoint -5°F (-21°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 8 Dec 10:56 pm EST
Extended Forecast for

Hadlyme CT

  • Tonight

    Tonight: Partly cloudy, with a low around 12. North wind 3 to 7 mph.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 35. Wind chill values between 10 and 20. Calm wind becoming south around 6 mph in the afternoon.

    High: 35 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow before 1am. Mostly cloudy, with a temperature rising to around 35 by midnight. Southwest wind 6 to 9 mph, with gusts as high as 22 mph.

    Low: 31 °F⇑

    Chance Snow

  • Wednesday

    Wednesday: Rain likely, mainly after 1pm. Mostly cloudy, with a high near 46. South wind 8 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 46 °F

    Slight Chance
    Rain then
    Rain Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 32. Southwest wind 9 to 11 mph, with gusts as high as 30 mph.

    Low: 32 °F

    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 22 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 12. North wind 3 to 7 mph.
Tuesday
Increasing clouds, with a high near 35. Wind chill values between 10 and 20. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
A 30 percent chance of snow before 1am. Mostly cloudy, with a temperature rising to around 35 by midnight. Southwest wind 6 to 9 mph, with gusts as high as 22 mph.
Wednesday
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 46. South wind 8 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 50 percent chance of rain before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 32. Southwest wind 9 to 11 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 40.
Thursday Night
Partly cloudy, with a low around 22.
Friday
Mostly sunny, with a high near 35.
Friday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 23.
Saturday
A chance of snow showers before 7am, then a chance of snow between 7am and noon. Partly sunny, with a high near 36. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 20.
Sunday
Mostly sunny, with a high near 31.
Sunday Night
Mostly clear, with a low around 16.
Monday
Mostly sunny, with a high near 31.
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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:
6:30 pm EST Dec 8, 2025
Forecast Valid:
11pm EST Dec 8, 2025-6pm EST Dec 15, 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