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

42°F

6°C

Humidity 85%
Wind Speed SE 8 mph
Barometer 29.88 in (1011.9 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 22 Mar 10:56 am EDT
Extended Forecast for

3 Miles ENE East Haddam CT

  • Today

    Today: Rain likely, mainly after 5pm. Cloudy, with a high near 52. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Rain Likely

  • Tonight

    Tonight: Rain before 11pm, then showers, mainly after 11pm. Low around 37. Light and variable wind becoming north around 6 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 37 °F

    Rain

  • Monday

    Monday: Showers likely before 8am, then a chance of rain between 8am and 2pm. Mostly cloudy, with a high near 43. North wind around 13 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 43 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming clear, with a low around 28. Northwest wind 8 to 11 mph.

    Low: 28 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 45. Northwest wind around 6 mph becoming west in the afternoon.

    High: 45 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 32.

    Low: 32 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: A 30 percent chance of rain. Mostly cloudy, with a high near 52.

    High: 52 °F

    Chance Rain

Detailed Forecast

Today
Rain likely, mainly after 5pm. Cloudy, with a high near 52. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain before 11pm, then showers, mainly after 11pm. Low around 37. Light and variable wind becoming north around 6 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Showers likely before 8am, then a chance of rain between 8am and 2pm. Mostly cloudy, with a high near 43. North wind around 13 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Mostly cloudy, then gradually becoming clear, with a low around 28. Northwest wind 8 to 11 mph.
Tuesday
Sunny, with a high near 45. Northwest wind around 6 mph becoming west in the afternoon.
Tuesday Night
Increasing clouds, with a low around 32.
Wednesday
Partly sunny, with a high near 50.
Wednesday Night
A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 36.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 52.
Thursday Night
Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 48.
Friday Night
Mostly clear, with a low around 24.
Saturday
Sunny, with a high near 40.
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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:
2:51 am EDT Mar 22, 2026
Forecast Valid:
11am EDT Mar 22, 2026-6pm EDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation