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

40°F

4°C

Humidity 68%
Wind Speed NW 5 mph
Barometer 30.25 in (1024.5 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 24 Nov 5:56 pm EST
Extended Forecast for

Groton / New London Airport CT

  • Tonight

    Tonight: Increasing clouds, with a low around 32. Northwest wind around 6 mph becoming calm in the evening.

    Low: 32 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A 30 percent chance of rain after 4pm. Cloudy, with a high near 53. Southwest wind 6 to 14 mph.

    High: 53 °F

    Cloudy then
    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly after 7pm. Low around 45. South wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Rain

  • Wednesday

    Wednesday: Showers likely, mainly before noon. Cloudy, with a high near 58. Southwest wind 9 to 11 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 58 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before midnight. Cloudy during the early evening, then gradual clearing, with a low around 37. West wind 9 to 14 mph, with gusts as high as 24 mph.

    Low: 37 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 42. Breezy.

    High: 42 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 32. Northwest wind around 6 mph becoming calm in the evening.
Tuesday
A 30 percent chance of rain after 4pm. Cloudy, with a high near 53. Southwest wind 6 to 14 mph.
Tuesday Night
Rain, mainly after 7pm. Low around 45. South wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Showers likely, mainly before noon. Cloudy, with a high near 58. Southwest wind 9 to 11 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 20 percent chance of showers before midnight. Cloudy during the early evening, then gradual clearing, with a low around 37. West wind 9 to 14 mph, with gusts as high as 24 mph.
Thanksgiving Day
Mostly sunny, with a high near 45.
Thursday Night
Mostly clear, with a low around 29.
Friday
Mostly sunny, with a high near 42. Breezy.
Friday Night
Mostly clear, with a low around 27.
Saturday
Sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Partly sunny, with a high near 46.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 36.
Monday
A 50 percent chance of rain. Mostly cloudy, with a high near 51.
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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:
3:30 pm EST Nov 24, 2025
Forecast Valid:
6pm EST Nov 24, 2025-6pm EST Dec 1, 2025
 
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Additional Resources

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Chance of Precipitation