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.

A Few Clouds

41°F

5°C

Humidity 89%
Wind Speed NW 10 G 18 mph
Barometer 30.15 in (1020.9 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 10 Jan 4:56 am EST
Extended Forecast for

Hadlyme CT

  • Today

    Today: Rain, mainly after 4pm. High near 44. Northwest wind around 5 mph becoming light and variable. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 44 °F

    Cloudy then
    Rain

  • Tonight

    Tonight: Rain, mainly before 4am. Steady temperature around 39. East wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain then
    Rain Likely

  • Sunday

    Sunday: A 40 percent chance of rain, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 44. West wind 5 to 10 mph.

    High: 44 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 26. Wind chill values between 15 and 20. West wind 10 to 13 mph, with gusts as high as 24 mph.

    Low: 26 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 38. West wind 6 to 11 mph.

    High: 38 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 45.

    High: 45 °F

    Mostly Cloudy

Detailed Forecast

Today
Rain, mainly after 4pm. High near 44. Northwest wind around 5 mph becoming light and variable. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain, mainly before 4am. Steady temperature around 39. East wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A 40 percent chance of rain, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 44. West wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 26. Wind chill values between 15 and 20. West wind 10 to 13 mph, with gusts as high as 24 mph.
Monday
Mostly sunny, with a high near 38. West wind 6 to 11 mph.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 45.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 32.
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ABOUT THIS FORECAST

 
Point Forecast:
Hadlyme CT
 41.4°N 72.34°W (Elev. 299 ft)
Last Update:
2:50 am EST Jan 10, 2026
Forecast Valid:
5am EST Jan 10, 2026-6pm EST Jan 16, 2026
 
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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