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.

Overcast

56°F

13°C

Humidity 75%
Wind Speed SW 8 mph
Barometer 30.28 in (1025.2 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 11 Oct 3:56 am EDT
Extended Forecast for

3 Miles ENE East Haddam CT

  • Today

    Today: Partly sunny, with a high near 66. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 66 °F

    Partly Sunny

  • Tonight

    Tonight: A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 52. Northeast wind 6 to 11 mph.

    Low: 52 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: Rain likely, mainly after 2pm. Cloudy, with a high near 60. Northeast wind 14 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Rain. Low around 52. Breezy, with a northeast wind around 20 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 52 °F

    Rain and
    Breezy

  • Columbus Day

    Columbus Day: Rain. High near 58. Breezy, with a northeast wind 20 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    High: 58 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: Rain. Low around 50. Breezy. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: Rain before 8am, then a chance of showers after 8am. High near 59. Chance of precipitation is 80%.

    High: 59 °F

    Rain then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 66. Calm wind becoming southeast 5 to 8 mph in the morning.
Tonight
A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 52. Northeast wind 6 to 11 mph.
Sunday
Rain likely, mainly after 2pm. Cloudy, with a high near 60. Northeast wind 14 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain. Low around 52. Breezy, with a northeast wind around 20 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Columbus Day
Rain. High near 58. Breezy, with a northeast wind 20 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Monday Night
Rain. Low around 50. Breezy. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain before 8am, then a chance of showers after 8am. High near 59. Chance of precipitation is 80%.
Tuesday Night
Mostly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 54.
Thursday Night
Mostly clear, with a low around 39.
Friday
Sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE East Haddam CT
 41.47°N 72.41°W (Elev. 554 ft)
Last Update:
2:22 am EDT Oct 11, 2025
Forecast Valid:
4am EDT Oct 11, 2025-6pm EDT Oct 17, 2025
 
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