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.

Mostly Cloudy

41°F

5°C

Humidity 51%
Wind Speed W 12 mph
Barometer 29.91 in (1012.7 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 4 Dec 12:56 pm EST
Extended Forecast for

Hadlyme CT

  • This Afternoon

    This Afternoon: Mostly cloudy, then gradually becoming sunny, with a high near 39. West wind around 14 mph, with gusts as high as 25 mph.

    High: 39 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 13. Northwest wind 9 to 14 mph becoming light north after midnight. Winds could gust as high as 29 mph.

    Low: 13 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 32. Wind chill values between 15 and 25. Calm wind becoming south around 6 mph.

    High: 32 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a steady temperature around 26. Calm wind.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A slight chance of rain and snow before 10am, then a slight chance of rain between 10am and 1pm. Mostly cloudy, with a high near 42. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 25.

    Low: 25 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 33.

    High: 33 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, then gradually becoming sunny, with a high near 39. West wind around 14 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 13. Northwest wind 9 to 14 mph becoming light north after midnight. Winds could gust as high as 29 mph.
Friday
Sunny, with a high near 32. Wind chill values between 15 and 25. Calm wind becoming south around 6 mph.
Friday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a steady temperature around 26. Calm wind.
Saturday
A slight chance of rain and snow before 10am, then a slight chance of rain between 10am and 1pm. Mostly cloudy, with a high near 42. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 25.
Sunday
Partly sunny, with a high near 41.
Sunday Night
Mostly cloudy, with a low around 22.
Monday
Sunny, with a high near 33.
Monday Night
Mostly clear, with a low around 13.
Tuesday
Partly sunny, with a high near 37.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 27. Chance of precipitation is 40%.
Wednesday
Mostly cloudy, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hadlyme CT
 41.42°N 72.33°W (Elev. 207 ft)
Last Update:
12:58 pm EST Dec 4, 2025
Forecast Valid:
1pm EST Dec 4, 2025-6pm EST Dec 10, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation