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.

Light Rain

54°F

12°C

Humidity 100%
Wind Speed NE 17 G 30 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 54°F (12°C)
Visibility 9.00 mi
Wind Chill49°F (9°C)
Last update 12 Oct 8:56 pm EDT
Extended Forecast for

Hadlyme CT

  • Tonight

    Tonight: Rain. Low around 53. Breezy, with a northeast wind around 22 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 53 °F

    Rain and
    Breezy

  • Columbus Day

    Columbus Day: Rain. High near 60. Breezy, with a northeast wind 21 to 23 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 60 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: Rain. Low around 51. Northeast wind 15 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 51 °F

    Rain

  • Tuesday

    Tuesday: A 40 percent chance of rain. Mostly cloudy, with a high near 62. North wind around 15 mph, with gusts as high as 26 mph.

    High: 62 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 49. North wind 5 to 7 mph.

    Low: 49 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
Rain. Low around 53. Breezy, with a northeast wind around 22 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Columbus Day
Rain. High near 60. Breezy, with a northeast wind 21 to 23 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Rain. Low around 51. Northeast wind 15 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 62. North wind around 15 mph, with gusts as high as 26 mph.
Tuesday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 49. North wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 39.
Thursday
Sunny, with a high near 57.
Thursday Night
Mostly clear, with a low around 38.
Friday
Sunny, with a high near 60.
Friday Night
Partly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Partly sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hadlyme CT
 41.42°N 72.33°W (Elev. 207 ft)
Last Update:
2:18 pm EDT Oct 12, 2025
Forecast Valid:
9pm EDT Oct 12, 2025-6pm EDT Oct 19, 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