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

38°F

3°C

Humidity 70%
Wind Speed Calm
Barometer 30.11 in (1019.7 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 7 Dec 9:56 am EST
Extended Forecast for

Groton / New London Airport CT

  • Today

    Today: Partly sunny, with a high near 40. North wind around 6 mph becoming south in the afternoon.

    High: 40 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 21. Wind chill values between 15 and 20. Southwest wind 7 to 16 mph becoming northwest after midnight. Winds could gust as high as 26 mph.

    Low: 21 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 29. Wind chill values between 10 and 15. North wind 13 to 17 mph, with gusts as high as 31 mph.

    High: 29 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 12. Wind chill values between 5 and 10. North wind 6 to 9 mph.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 39. Light and variable wind becoming southwest 8 to 13 mph in the morning.

    High: 39 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of rain after 1pm. Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

  • Thursday

    Thursday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 40. North wind around 6 mph becoming south in the afternoon.
Tonight
Partly cloudy, with a low around 21. Wind chill values between 15 and 20. Southwest wind 7 to 16 mph becoming northwest after midnight. Winds could gust as high as 26 mph.
Monday
Mostly sunny, with a high near 29. Wind chill values between 10 and 15. North wind 13 to 17 mph, with gusts as high as 31 mph.
Monday Night
Partly cloudy, with a low around 12. Wind chill values between 5 and 10. North wind 6 to 9 mph.
Tuesday
Increasing clouds, with a high near 39. Light and variable wind becoming southwest 8 to 13 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
A 40 percent chance of rain after 1pm. Mostly cloudy, with a high near 46.
Wednesday Night
A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 33.
Thursday
Partly sunny, with a high near 42.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 40%.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 22.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 33.
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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:
7:42 am EST Dec 7, 2025
Forecast Valid:
10am EST Dec 7, 2025-6pm EST Dec 13, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation