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.

Fair

66°F

19°C

Humidity 84%
Wind Speed SW 8 mph
Barometer 29.97 in (1014.9 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 19 May 7:56 pm EDT
Extended Forecast for

Hadlyme CT

  • Tonight

    Tonight: Partly cloudy, with a low around 68. Southwest wind around 6 mph becoming calm in the evening.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Southwest wind 5 to 11 mph.

    High: 89 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 57. Northwest wind 3 to 7 mph. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, with a high near 68. North wind 3 to 7 mph.

    High: 68 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers likely, mainly after 8am. Cloudy, with a high near 61. Chance of precipitation is 70%.

    High: 61 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.

    Low: 50 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 68. Southwest wind around 6 mph becoming calm in the evening.
Wednesday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Southwest wind 5 to 11 mph.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 57. Northwest wind 3 to 7 mph. Chance of precipitation is 30%.
Thursday
Mostly cloudy, with a high near 68. North wind 3 to 7 mph.
Thursday Night
Partly cloudy, with a low around 48. Calm wind.
Friday
Mostly sunny, with a high near 68.
Friday Night
A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 48.
Saturday
Showers likely, mainly after 8am. Cloudy, with a high near 61. Chance of precipitation is 70%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 65.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 53.
Memorial Day
A 30 percent chance of showers. Mostly cloudy, with a high near 73.
Monday Night
Mostly cloudy, with a low around 56.
Tuesday
Partly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hadlyme CT
 41.38°N 72.34°W (Elev. 69 ft)
Last Update:
2:23 pm EDT May 19, 2026
Forecast Valid:
8pm EDT May 19, 2026-6pm EDT May 26, 2026
 
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