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

52°F

11°C

Humidity NA
Wind Speed N 3 mph
Barometer 30.06 in (1018.0 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 11 Sep 4:56 am EDT
Extended Forecast for

Hadlyme CT

  • Today

    Today: Patchy fog before 9am. Otherwise, sunny, with a high near 81. North wind around 6 mph.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Patchy fog after 10pm. Otherwise, mostly clear, with a low around 56. Calm wind becoming north around 5 mph after midnight.

    Low: 56 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 10am. Otherwise, sunny, with a high near 75. Northeast wind around 6 mph becoming east in the afternoon.

    High: 75 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after 10pm. Otherwise, mostly clear, with a low around 51. Calm wind.

    Low: 51 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 74. Calm wind becoming south around 6 mph in the afternoon.

    High: 74 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 57.

    Low: 57 °F

    Patchy Fog

  • Sunday

    Sunday: A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 75.

    High: 75 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers. Partly sunny, with a high near 73.

    High: 73 °F

    Chance
    Showers

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, sunny, with a high near 81. North wind around 6 mph.
Tonight
Patchy fog after 10pm. Otherwise, mostly clear, with a low around 56. Calm wind becoming north around 5 mph after midnight.
Friday
Patchy fog before 10am. Otherwise, sunny, with a high near 75. Northeast wind around 6 mph becoming east in the afternoon.
Friday Night
Patchy fog after 10pm. Otherwise, mostly clear, with a low around 51. Calm wind.
Saturday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 74. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 57.
Sunday
A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 75.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 56.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 73.
Monday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 76.
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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:
3:26 am EDT Sep 11, 2025
Forecast Valid:
5am EDT Sep 11, 2025-6pm EDT Sep 17, 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