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

41°F

5°C

Humidity 38%
Wind Speed NW 13 G 23 mph
Barometer 30.17 in (1021.6 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 14 Mar 7:56 pm EDT
Extended Forecast for

New London CT

  • Tonight

    Tonight: Mostly clear, with a low around 29. Northwest wind 5 to 11 mph, with gusts as high as 28 mph.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 45. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.

    High: 45 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Showers after 2am. Temperature falling to near 36 by 9pm, then rising to around 44 during the remainder of the night. Southeast wind 8 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 36 °F⇑

    Mostly Cloudy
    then Showers

  • Monday

    Monday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 57. South wind 16 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 57 °F

    Heavy Rain

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 35. Breezy, with a south wind 21 to 23 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 35 °F

    Heavy Rain
    and Breezy

  • Tuesday

    Tuesday: Showers likely before 8am. Mostly sunny, with a steady temperature around 39. Chance of precipitation is 60%.

    High: 39 °F

    Showers
    Likely then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming clear, with a low around 22.

    Low: 22 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 29. Northwest wind 5 to 11 mph, with gusts as high as 28 mph.
Sunday
Partly sunny, with a high near 45. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Sunday Night
Showers after 2am. Temperature falling to near 36 by 9pm, then rising to around 44 during the remainder of the night. Southeast wind 8 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 57. South wind 16 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Monday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 35. Breezy, with a south wind 21 to 23 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Tuesday
Showers likely before 8am. Mostly sunny, with a steady temperature around 39. Chance of precipitation is 60%.
Tuesday Night
Mostly cloudy, then gradually becoming clear, with a low around 22.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Partly sunny, with a high near 43.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Mostly sunny, with a high near 47.
Friday Night
Partly cloudy, with a low around 32.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New London CT
 41.37°N 72.11°W (Elev. 125 ft)
Last Update:
7:50 pm EDT Mar 14, 2026
Forecast Valid:
8pm EDT Mar 14, 2026-6pm EDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation