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

45°F

7°C

Humidity 68%
Wind Speed S 7 mph
Barometer 30.08 in (1018.5 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 20 Mar 11:56 am EDT
Extended Forecast for

3 Miles ENE East Haddam CT

  • This Afternoon

    This Afternoon: A 30 percent chance of rain after 5pm. Partly sunny, with a high near 51. South wind 9 to 13 mph, with gusts as high as 25 mph.

    High: 51 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly before 11pm. Low around 40. South wind 7 to 14 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Rain then
    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 52. Northwest wind around 10 mph, with gusts as high as 21 mph.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 36. North wind around 6 mph becoming light and variable after midnight.

    Low: 36 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and snow before 11am, then a chance of rain. Mostly cloudy, with a high near 51. South wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 51 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain likely. Mostly cloudy, with a low around 38. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Rain Likely

  • Monday

    Monday: A 40 percent chance of rain before 2pm. Mostly cloudy, with a high near 44.

    High: 44 °F

    Chance Rain

  • Monday Night

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

    Low: 27 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of rain after 5pm. Partly sunny, with a high near 51. South wind 9 to 13 mph, with gusts as high as 25 mph.
Tonight
Rain, mainly before 11pm. Low around 40. South wind 7 to 14 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Sunny, with a high near 52. Northwest wind around 10 mph, with gusts as high as 21 mph.
Saturday Night
Mostly cloudy, with a low around 36. North wind around 6 mph becoming light and variable after midnight.
Sunday
A chance of rain and snow before 11am, then a chance of rain. Mostly cloudy, with a high near 51. South wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 38. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 40 percent chance of rain before 2pm. Mostly cloudy, with a high near 44.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
Mostly sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
Partly sunny, with a high near 47.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Thursday
A chance of rain and snow. Partly sunny, with a high near 48. Chance of precipitation is 30%.
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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:
9:59 am EDT Mar 20, 2026
Forecast Valid:
12pm EDT Mar 20, 2026-6pm EDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation