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

59°F

15°C

Humidity 35%
Wind Speed N 9 mph
Barometer 30.14 in (1020.6 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 12 May 10:56 am EDT
Extended Forecast for

3 Miles ENE Hadlyme CT

  • Today

    Today: Sunny, with a high near 66. West wind 7 to 9 mph.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 47. Southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 47 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 63. South wind 5 to 14 mph, with gusts as high as 26 mph.

    High: 63 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 52. South wind 6 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 52 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 2pm. High near 64. Southeast wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 64 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers. Mostly cloudy, with a high near 65.

    High: 65 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 66. West wind 7 to 9 mph.
Tonight
Increasing clouds, with a low around 47. Southwest wind 5 to 7 mph becoming calm in the evening.
Wednesday
Mostly cloudy, with a high near 63. South wind 5 to 14 mph, with gusts as high as 26 mph.
Wednesday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 52. South wind 6 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers, with thunderstorms also possible after 2pm. High near 64. Southeast wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 65.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 57.
Monday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Hadlyme CT
 41.41°N 72.3°W (Elev. 98 ft)
Last Update:
9:26 am EDT May 12, 2026
Forecast Valid:
11am EDT May 12, 2026-6pm EDT May 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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