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

60°F

16°C

Humidity 90%
Wind Speed SW 7 mph
Barometer 30.08 in (1018.6 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 4 Nov 5:56 pm EST
Extended Forecast for

Groton / New London Airport CT

  • Tonight

    Tonight: Increasing clouds, with a low around 57. Southwest wind around 8 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 69. Southwest wind 8 to 14 mph.

    High: 69 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of rain, then rain and possibly a thunderstorm after 1am. Steady temperature around 63. Southwest wind 9 to 11 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Chance Rain
    then Rain

  • Friday

    Friday: Rain and possibly a thunderstorm. High near 67. South wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    High: 67 °F

    Rain

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm before 1am, then a chance of rain. Low around 55. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Rain

  • Saturday

    Saturday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain

  • Sunday

    Sunday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 57. Southwest wind around 8 mph.
Thursday
Partly sunny, with a high near 69. Southwest wind 8 to 14 mph.
Thursday Night
A chance of rain, then rain and possibly a thunderstorm after 1am. Steady temperature around 63. Southwest wind 9 to 11 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Rain and possibly a thunderstorm. High near 67. South wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Friday Night
Rain and possibly a thunderstorm before 1am, then a chance of rain. Low around 55. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Partly sunny, with a high near 65.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 44.
Sunday
Mostly sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Sunny, with a high near 59.
Tuesday Night
Mostly clear, with a low around 38.
Veterans Day
Sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Groton / New London Airport CT
 41.34°N 72.05°W (Elev. 49 ft)
Last Update:
1:23 pm EST Nov 4, 2026
Forecast Valid:
6pm EST Nov 4, 2026-6pm EST Nov 11, 2026
 
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