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.

Light Rain Fog/Mist

47°F

8°C

Humidity 97%
Wind Speed E 12 G 23 mph
Barometer 29.78 in (1008.4 mb)
Dewpoint 46°F (8°C)
Visibility 6.00 mi
Wind Chill42°F (6°C)
Last update 2 Dec 1:56 pm EST
Extended Forecast for

Groton / New London Airport CT

  • This Afternoon

    This Afternoon: Rain. High near 45. East wind 8 to 11 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 45 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 10pm. Low around 29. Northwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 29 °F

    Rain then
    Chance Rain

  • Wednesday

    Wednesday: Sunny, with a high near 40. Wind chill values between 20 and 30. Northwest wind 6 to 10 mph.

    High: 40 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a steady temperature around 33. Wind chill values between 25 and 30. Light west wind increasing to 5 to 9 mph in the evening.

    Low: 33 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 40. West wind 11 to 17 mph, with gusts as high as 29 mph.

    High: 40 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 14.

    Low: 14 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 32.

    High: 32 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: A 40 percent chance of rain. Partly sunny, with a high near 40.

    High: 40 °F

    Chance Rain

Detailed Forecast

This Afternoon
Rain. High near 45. East wind 8 to 11 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tonight
Rain, mainly before 10pm. Low around 29. Northwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Sunny, with a high near 40. Wind chill values between 20 and 30. Northwest wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a steady temperature around 33. Wind chill values between 25 and 30. Light west wind increasing to 5 to 9 mph in the evening.
Thursday
Partly sunny, with a high near 40. West wind 11 to 17 mph, with gusts as high as 29 mph.
Thursday Night
Mostly clear, with a low around 14.
Friday
Increasing clouds, with a high near 32.
Friday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 23.
Saturday
A 40 percent chance of rain. Partly sunny, with a high near 40.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 38.
Sunday Night
Mostly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 30.
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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:
1:01 pm EST Dec 2, 2025
Forecast Valid:
2pm EST Dec 2, 2025-6pm EST Dec 8, 2025
 
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