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

57°F

14°C

Humidity 69%
Wind Speed SW 7 mph
Barometer 30.00 in (1015.8 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 31 Mar 11:56 am EDT
Extended Forecast for

3 Miles ENE East Haddam CT

  • This Afternoon

    This Afternoon: A 20 percent chance of showers before 2pm. Mostly sunny, with a high near 71. Southwest wind 11 to 14 mph.

    High: 71 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. South wind 8 to 11 mph. Chance of precipitation is 30%.

    Low: 55 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of rain, then rain likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 71. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Rain, mainly before 2am. Low around 40. Northeast wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Rain

  • Thursday

    Thursday: A 30 percent chance of rain, mainly before 2pm. Cloudy, with a high near 46. East wind around 10 mph.

    High: 46 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A chance of rain between 8pm and 2am. Cloudy, with a low around 39. Chance of precipitation is 30%.

    Low: 39 °F

    Chance Rain

  • Friday

    Friday: Mostly cloudy, with a high near 61.

    High: 61 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers before 2pm. Mostly sunny, with a high near 71. Southwest wind 11 to 14 mph.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. South wind 8 to 11 mph. Chance of precipitation is 30%.
Wednesday
A chance of rain, then rain likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 71. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain, mainly before 2am. Low around 40. Northeast wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A 30 percent chance of rain, mainly before 2pm. Cloudy, with a high near 46. East wind around 10 mph.
Thursday Night
A chance of rain between 8pm and 2am. Cloudy, with a low around 39. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 61.
Friday Night
Mostly cloudy, with a low around 52.
Saturday
Partly sunny, with a high near 69.
Saturday Night
A 30 percent chance of rain after 8pm. Mostly cloudy, with a low around 47.
Sunday
A 50 percent chance of rain. Mostly cloudy, with a high near 64.
Sunday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 43.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE East Haddam CT
 41.47°N 72.41°W (Elev. 554 ft)
Last Update:
10:11 am EDT Mar 31, 2026
Forecast Valid:
12pm EDT Mar 31, 2026-6pm EDT Apr 6, 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