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

58°F

14°C

Humidity 51%
Wind Speed SW 10 mph
Barometer 29.87 in (1011.4 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 11 Nov 1:56 pm EST
Extended Forecast for

Groton CT

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 58. West wind 5 to 8 mph.

    High: 58 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 46. South wind 5 to 8 mph becoming northeast after midnight.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers, mainly after noon. High near 58. East wind 10 to 17 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 58 °F

    Mostly Cloudy
    then Showers

  • Thursday Night

    Thursday Night: Rain, mainly before midnight. Low around 42. Breezy, with a northeast wind 17 to 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 42 °F

    Rain and
    Breezy

  • Friday

    Friday: Rain. High near 47. Breezy, with a north wind 15 to 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 47 °F

    Rain and
    Breezy

  • Friday Night

    Friday Night: A 40 percent chance of rain before 10pm. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 48.

    High: 48 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

Detailed Forecast

Veterans Day
Mostly sunny, with a high near 58. West wind 5 to 8 mph.
Tonight
Mostly cloudy, with a low around 46. South wind 5 to 8 mph becoming northeast after midnight.
Thursday
Showers, mainly after noon. High near 58. East wind 10 to 17 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain, mainly before midnight. Low around 42. Breezy, with a northeast wind 17 to 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 47. Breezy, with a north wind 15 to 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A 40 percent chance of rain before 10pm. Mostly cloudy, with a low around 36.
Saturday
Mostly cloudy, with a high near 48.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Sunny, with a high near 50.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Sunny, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Groton CT
 41.32°N 72.09°W (Elev. 3 ft)
Last Update:
1:27 pm EST Nov 11, 2026
Forecast Valid:
2pm EST Nov 11, 2026-6pm EST Nov 17, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation