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.

A Few Clouds and Breezy

41°F

5°C

Humidity 67%
Wind Speed SW 22 G 35 mph
Barometer 29.86 in (1011.0 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 10 Dec 1:56 am EST
Extended Forecast for

Hadlyme CT

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 36. Southwest wind around 11 mph, with gusts as high as 25 mph.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly after 4pm. Mostly cloudy, with a high near 48. South wind 9 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 48 °F

    Mostly Cloudy
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Rain, mainly before 10pm. Low around 29. Southwest wind 8 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 29 °F

    Rain then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 36. Wind chill values between 20 and 25. West wind 13 to 18 mph, with gusts as high as 30 mph.

    High: 36 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 22. West wind 14 to 16 mph, with gusts as high as 33 mph.

    Low: 22 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 36. Southwest wind around 11 mph, with gusts as high as 25 mph.
Wednesday
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 48. South wind 9 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain, mainly before 10pm. Low around 29. Southwest wind 8 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Mostly sunny, with a high near 36. Wind chill values between 20 and 25. West wind 13 to 18 mph, with gusts as high as 30 mph.
Thursday Night
Mostly clear, with a low around 22. West wind 14 to 16 mph, with gusts as high as 33 mph.
Friday
Mostly sunny, with a high near 34.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Partly sunny, with a high near 38.
Saturday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 24.
Sunday
A 30 percent chance of snow before 1pm. Partly sunny, with a high near 34.
Sunday Night
Mostly clear, with a low around 14.
Monday
Sunny, with a high near 28.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Mostly sunny, with a high near 32.
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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:
1:15 am EST Dec 10, 2025
Forecast Valid:
2am EST Dec 10, 2025-6pm EST Dec 16, 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