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

37°F

3°C

Humidity 79%
Wind Speed W 8 mph
Barometer 29.94 in (1014.0 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 7 Jan 10:56 pm EST
Extended Forecast for

Groton / New London Airport CT

  • Tonight

    Tonight: Mostly clear, with a low around 29. Northwest wind 6 to 8 mph.

    Low: 29 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 43. Wind chill values between 25 and 35. Northwest wind 6 to 8 mph.

    High: 43 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 46. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph.

    High: 46 °F

    Partly Sunny
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain likely. Cloudy, with a low around 41. South wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Rain Likely

  • Saturday

    Saturday: Rain, mainly after 1pm. High near 49. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 49 °F

    Chance Rain
    then Rain

  • Saturday Night

    Saturday Night: Rain. Low around 40. Chance of precipitation is 90%.

    Low: 40 °F

    Rain

  • Sunday

    Sunday: A 40 percent chance of rain. Mostly cloudy, with a high near 47.

    High: 47 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 29. Northwest wind 6 to 8 mph.
Thursday
Sunny, with a high near 43. Wind chill values between 25 and 35. Northwest wind 6 to 8 mph.
Thursday Night
Partly cloudy, with a low around 29. Calm wind.
Friday
A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 46. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph.
Friday Night
Rain likely. Cloudy, with a low around 41. South wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain, mainly after 1pm. High near 49. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Rain. Low around 40. Chance of precipitation is 90%.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 47.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Sunny, with a high near 37.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Mostly sunny, with a high near 40.
Tuesday Night
Partly cloudy, with a low around 30.
Wednesday
Partly sunny, with a high near 43.
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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:
6:54 pm EST Jan 7, 2026
Forecast Valid:
11pm EST Jan 7, 2026-6pm EST Jan 14, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation