National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fog

62°F

17°C

Humidity 100%
Wind Speed E 10 mph
Barometer 30.02 in (1016.6 mb)
Dewpoint 62°F (17°C)
Visibility 0.50 mi
Last update 17 Jun 6:56 pm EDT
Extended Forecast for

3 Miles NNE Hadlyme CT

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after 2am. Patchy fog. Otherwise, cloudy, with a low around 64. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 11am, then a slight chance of showers and thunderstorms after 11am. Cloudy, with a high near 76. South wind 3 to 6 mph. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 66. Light south wind.

    Low: 66 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Heat index values as high as 99. Southwest wind 5 to 13 mph, with gusts as high as 24 mph.

    High: 90 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 65. Southwest wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 65 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of showers, with thunderstorms also possible after 2am. Patchy fog. Otherwise, cloudy, with a low around 64. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 11am, then a slight chance of showers and thunderstorms after 11am. Cloudy, with a high near 76. South wind 3 to 6 mph. Chance of precipitation is 40%.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 66. Light south wind.
Juneteenth
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Heat index values as high as 99. Southwest wind 5 to 13 mph, with gusts as high as 24 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 65. Southwest wind 7 to 9 mph, with gusts as high as 21 mph.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Mostly cloudy, with a low around 66.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 69.
Monday
Mostly sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 71.
Tuesday
Sunny, with a high near 95.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Hadlyme CT
 41.44°N 72.33°W (Elev. 95 ft)
Last Update:
3:10 pm EDT Jun 17, 2025
Forecast Valid:
7pm EDT Jun 17, 2025-6pm EDT Jun 24, 2025
 
Forecast Discussion
 
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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