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.

Mostly Cloudy

75°F

24°C

Humidity 84%
Wind Speed S 9 mph
Barometer 30.19 in (1022.2 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 17 Sep 1:56 pm EDT
Extended Forecast for

3 Miles ESE East Haddam CT

  • This Afternoon

    This Afternoon: Scattered showers after 4pm. Partly sunny, with a high near 78. South wind around 7 mph. Chance of precipitation is 30%.

    High: 78 °F

    Scattered
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and 2am, then a chance of showers and thunderstorms after 2am. Cloudy, then becoming partly cloudy toward daybreak, with a low around 65. South wind around 5 mph becoming calm after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Showers
    Likely

  • Friday

    Friday: Sunny, with a high near 79. North wind 6 to 9 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51. North wind 3 to 5 mph.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69. North wind around 5 mph becoming calm in the morning.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 53.

    Low: 53 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers. High near 67. Chance of precipitation is 90%.

    High: 67 °F

    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before 2am. Low around 54. Chance of precipitation is 80%.

    Low: 54 °F

    Showers

  • Monday

    Monday: A 30 percent chance of showers before 8am. Partly sunny, with a high near 67.

    High: 67 °F

    Chance
    Showers then
    Mostly Sunny

Detailed Forecast

This Afternoon
Scattered showers after 4pm. Partly sunny, with a high near 78. South wind around 7 mph. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and 2am, then a chance of showers and thunderstorms after 2am. Cloudy, then becoming partly cloudy toward daybreak, with a low around 65. South wind around 5 mph becoming calm after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Sunny, with a high near 79. North wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around 51. North wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 69. North wind around 5 mph becoming calm in the morning.
Saturday Night
Increasing clouds, with a low around 53.
Sunday
Showers. High near 67. Chance of precipitation is 90%.
Sunday Night
Showers, mainly before 2am. Low around 54. Chance of precipitation is 80%.
Monday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Partly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
Mostly sunny, with a high near 67.
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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:
11:11 am EDT Sep 17, 2026
Forecast Valid:
2pm EDT Sep 17, 2026-6pm EDT Sep 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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