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

25°F

-4°C

Humidity 60%
Wind Speed Vrbl 5 mph
Barometer 30.17 in (1021.7 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 5 Dec 2:56 pm EST
Extended Forecast for

Hadlyme CT

  • Tonight

    Tonight: A slight chance of snow after 4am, mixing with freezing rain after 5am. Increasing clouds, with a low around 22. Calm wind. Chance of precipitation is 20%.

    Low: 22 °F

    Mostly Cloudy
    then Slight
    Chance Wintry
    Mix

  • Saturday

    Saturday: A chance of snow and freezing rain before 9am, then a chance of drizzle between 9am and 4pm. Cloudy, with a high near 40. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 40 °F

    Chance Wintry
    Mix then
    Chance
    Drizzle

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 24. Calm wind.

    Low: 24 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 38. Calm wind becoming north around 5 mph.

    High: 38 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 23. Calm wind becoming west around 6 mph after midnight.

    Low: 23 °F

    Slight Chance
    Snow

  • Monday

    Monday: Sunny, with a high near 30.

    High: 30 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13.

    Low: 13 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of snow after 4am, mixing with freezing rain after 5am. Increasing clouds, with a low around 22. Calm wind. Chance of precipitation is 20%.
Saturday
A chance of snow and freezing rain before 9am, then a chance of drizzle between 9am and 4pm. Cloudy, with a high near 40. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 24. Calm wind.
Sunday
Partly sunny, with a high near 38. Calm wind becoming north around 5 mph.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 23. Calm wind becoming west around 6 mph after midnight.
Monday
Sunny, with a high near 30.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Mostly sunny, with a high near 35.
Tuesday Night
Mostly cloudy, with a low around 27.
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 40 percent chance of rain. Partly sunny, with a high near 44.
Thursday Night
Mostly cloudy, with a low around 27.
Friday
Partly sunny, with a high near 39.
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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:
1:11 pm EST Dec 5, 2025
Forecast Valid:
3pm EST Dec 5, 2025-6pm EST Dec 12, 2025
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation