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.

A Few Clouds

54°F

12°C

Humidity 53%
Wind Speed NW 16 G 24 mph
Barometer 29.85 in (1010.6 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 21 Mar 11:56 am EDT
Extended Forecast for

3 Miles ENE East Haddam CT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 53. North wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 53 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. Calm wind becoming southeast around 5 mph after midnight.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain before 8am, then a chance of rain after 2pm. Mostly cloudy, with a high near 54. Southwest wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    High: 54 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain, mainly after 8pm. Low around 36. South wind 5 to 7 mph becoming north in the evening. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 36 °F

    Rain

  • Monday

    Monday: A chance of rain and snow before 11am, then a chance of snow between 11am and 2pm. Mostly cloudy, with a high near 43. North wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    High: 43 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Monday Night

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

    Low: 27 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 53. North wind 8 to 10 mph, with gusts as high as 21 mph.
Tonight
Mostly cloudy, with a low around 38. Calm wind becoming southeast around 5 mph after midnight.
Sunday
A slight chance of rain before 8am, then a chance of rain after 2pm. Mostly cloudy, with a high near 54. Southwest wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Sunday Night
Rain, mainly after 8pm. Low around 36. South wind 5 to 7 mph becoming north in the evening. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
A chance of rain and snow before 11am, then a chance of snow between 11am and 2pm. Mostly cloudy, with a high near 43. North wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
Sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
Partly sunny, with a high near 50.
Wednesday Night
Mostly cloudy, with a low around 32.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 47. Chance of precipitation is 30%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.
Friday
Rain likely. Partly sunny, with a high near 48. Chance of precipitation is 60%.
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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:
9:57 am EDT Mar 21, 2026
Forecast Valid:
12pm EDT Mar 21, 2026-6pm EDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation