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

34°F

1°C

Humidity 56%
Wind Speed SW 13 mph
Barometer 30.02 in (1016.6 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 9 Dec 7:56 pm EST
Extended Forecast for

Hadlyme CT

  • Tonight

    Tonight: Mostly cloudy, with a temperature rising to around 34 by midnight. Wind chill values between 20 and 25. Southwest wind 6 to 8 mph, with gusts as high as 21 mph.

    Low: 27 °F⇑

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly after 1pm. Mostly cloudy, with a high near 46. Wind chill values between 25 and 35 early. South wind 8 to 16 mph, with gusts as high as 34 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 29. Southwest wind 9 to 13 mph, with gusts as high as 29 mph.

    Low: 29 °F

    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 35. Wind chill values between 20 and 25. West wind 13 to 17 mph, with gusts as high as 33 mph.

    High: 35 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 20. West wind 10 to 14 mph, with gusts as high as 32 mph.

    Low: 20 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Mostly cloudy, with a temperature rising to around 34 by midnight. Wind chill values between 20 and 25. Southwest wind 6 to 8 mph, with gusts as high as 21 mph.
Wednesday
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 46. Wind chill values between 25 and 35 early. South wind 8 to 16 mph, with gusts as high as 34 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 29. Southwest wind 9 to 13 mph, with gusts as high as 29 mph.
Thursday
Mostly sunny, with a high near 35. Wind chill values between 20 and 25. West wind 13 to 17 mph, with gusts as high as 33 mph.
Thursday Night
Mostly clear, with a low around 20. West wind 10 to 14 mph, with gusts as high as 32 mph.
Friday
Mostly sunny, with a high near 36.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Mostly cloudy, with a high near 40.
Saturday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 26.
Sunday
A 40 percent chance of snow before 1pm. Partly sunny, with a high near 36.
Sunday Night
Mostly clear, with a low around 15.
Monday
Sunny, with a high near 29.
Monday Night
Mostly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 33.
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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:
5:42 pm EST Dec 9, 2025
Forecast Valid:
8pm EST Dec 9, 2025-6pm EST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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