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.

Fair

30°F

-1°C

Humidity 92%
Wind Speed Calm
Barometer 30.29 in (1025.6 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 8 Jan 7:56 pm EST
Extended Forecast for

3 Miles ESE East Haddam CT

  • Tonight

    Tonight: Partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of rain after 4pm. Mostly cloudy, with a high near 50. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

    High: 50 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain before 1am. Cloudy, with a low around 40. South wind 5 to 7 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 40 °F

    Chance Rain

  • Saturday

    Saturday: Rain, mainly after 1pm. High near 47. Light and variable wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 47 °F

    Slight Chance
    Rain then
    Rain

  • Saturday Night

    Saturday Night: Rain. Low around 39. Light and variable wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain

  • Sunday

    Sunday: A 40 percent chance of rain. Mostly cloudy, with a high near 46.

    High: 46 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Monday Night

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

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 28. Calm wind.
Friday
A 40 percent chance of rain after 4pm. Mostly cloudy, with a high near 50. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Friday Night
A 50 percent chance of rain before 1am. Cloudy, with a low around 40. South wind 5 to 7 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Saturday
Rain, mainly after 1pm. High near 47. Light and variable wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Rain. Low around 39. Light and variable wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 46.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Mostly sunny, with a high near 39.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 45.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 31.
Thursday
A 30 percent chance of rain. Partly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE East Haddam CT
 41.43°N 72.42°W (Elev. 98 ft)
Last Update:
12:58 pm EST Jan 8, 2026
Forecast Valid:
8pm EST Jan 8, 2026-6pm EST Jan 15, 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