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.

Overcast

62°F

17°C

Humidity 100%
Wind Speed NE 5 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 62°F (17°C)
Visibility 7.00 mi
Last update 17 Jun 3:56 am EDT
Extended Forecast for

4 Miles NNW Hadlyme CT

  • Overnight

    Overnight: A 50 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: A 50 percent chance of showers, mainly before 2pm. Patchy fog before 8am. Otherwise, cloudy, with a high near 67. Southeast wind 3 to 6 mph.

    High: 67 °F

    Chance
    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 62. Light southeast wind.

    Low: 62 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 5pm. Cloudy, with a high near 76. South wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Juneteenth

    Juneteenth: Mostly cloudy, then gradually becoming sunny, with a high near 87.

    High: 87 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: A chance of showers between 8pm and 11pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Overnight
A 50 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 59. Calm wind.
Tuesday
A 50 percent chance of showers, mainly before 2pm. Patchy fog before 8am. Otherwise, cloudy, with a high near 67. Southeast wind 3 to 6 mph.
Tuesday Night
A 40 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 62. Light southeast wind.
Wednesday
A chance of showers, with thunderstorms also possible after 5pm. Cloudy, with a high near 76. South wind 3 to 6 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Juneteenth
Mostly cloudy, then gradually becoming sunny, with a high near 87.
Thursday Night
A chance of showers between 8pm and 11pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 63.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Mostly cloudy, with a low around 66.
Sunday
Mostly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Hadlyme CT
 41.44°N 72.35°W (Elev. 433 ft)
Last Update:
3:36 am EDT Jun 17, 2025
Forecast Valid:
4am EDT Jun 17, 2025-6pm EDT Jun 23, 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