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

69°F

21°C

Humidity 73%
Wind Speed S 7 mph
Barometer 30.29 in (1025.5 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 5 Oct 1:56 pm EDT
Extended Forecast for

Hadlyme CT

  • This Afternoon

    This Afternoon: Sunny, with a high near 83. South wind around 7 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 57. Calm wind.

    Low: 57 °F

    Patchy Fog

  • Monday

    Monday: Areas of fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 80. Calm wind becoming south 5 to 9 mph in the morning.

    High: 80 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. Southwest wind 3 to 6 mph.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. Southwest wind 5 to 13 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Showers, mainly after 2am. Low around 58. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 58 °F

    Chance
    Showers then
    Showers

  • Wednesday

    Wednesday: Showers, mainly before 2pm. High near 69. Chance of precipitation is 90%.

    High: 69 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 8pm. Mostly clear, with a low around 43.

    Low: 43 °F

    Chance
    Showers then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 83. South wind around 7 mph.
Tonight
Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 57. Calm wind.
Monday
Areas of fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 80. Calm wind becoming south 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 57. Southwest wind 3 to 6 mph.
Tuesday
Sunny, with a high near 78. Southwest wind 5 to 13 mph.
Tuesday Night
Showers, mainly after 2am. Low around 58. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Showers, mainly before 2pm. High near 69. Chance of precipitation is 90%.
Wednesday Night
A 30 percent chance of showers before 8pm. Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 62.
Thursday Night
Mostly clear, with a low around 39.
Friday
Sunny, with a high near 64.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Mostly sunny, with a high near 68.
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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:
2:01 pm EDT Oct 5, 2025
Forecast Valid:
2pm EDT Oct 5, 2025-6pm EDT Oct 11, 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