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 39%
Wind Speed SW 14 G 26 mph
Barometer 30.06 in (1017.7 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 12 May 4:56 pm EDT
Extended Forecast for

3 Miles ENE Hadlyme CT

  • Tonight

    Tonight: Increasing clouds, with a low around 48. Southwest wind 6 to 9 mph.

    Low: 48 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 64. South wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 64 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A slight chance of showers before 11pm, then showers likely after 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 52. South wind 5 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Slight Chance
    Showers then
    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: Showers and possibly a thunderstorm. Patchy fog. High near 63. East wind 5 to 7 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 63 °F

    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    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

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 48. Southwest wind 6 to 9 mph.
Wednesday
Mostly cloudy, with a high near 64. South wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 31 mph.
Wednesday Night
A slight chance of showers before 11pm, then showers likely after 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 52. South wind 5 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers and possibly a thunderstorm. Patchy fog. High near 63. East wind 5 to 7 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
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 77.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Partly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Hadlyme CT
 41.41°N 72.3°W (Elev. 98 ft)
Last Update:
2:36 pm EDT May 12, 2026
Forecast Valid:
5pm EDT May 12, 2026-6pm EDT May 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation