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

53°F

12°C

Humidity 93%
Wind Speed Calm
Barometer 30.05 in (1017.6 mb)
Dewpoint 51°F (11°C)
Visibility 7.00 mi
Last update 1 Apr 3:56 pm EDT
Extended Forecast for

Groton / New London Airport CT

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. Steady temperature around 61. Northwest wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 61 °F

    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Low around 39. Calm wind becoming northeast 5 to 9 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 39 °F

    Showers

  • Thursday

    Thursday: Showers, mainly before 8am. High near 44. Northeast wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 44 °F

    Showers then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before 2am. Cloudy, with a low around 37. Northeast wind 5 to 7 mph.

    Low: 37 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 56. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 56 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.

    High: 57 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. Steady temperature around 61. Northwest wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm. Low around 39. Calm wind becoming northeast 5 to 9 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers, mainly before 8am. High near 44. Northeast wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 20 percent chance of showers before 2am. Cloudy, with a low around 37. Northeast wind 5 to 7 mph.
Friday
Mostly cloudy, with a high near 56. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 49.
Saturday
Partly sunny, with a high near 64.
Saturday Night
Mostly cloudy, with a low around 43.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.
Sunday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 39. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Mostly sunny, with a high near 50.
Tuesday Night
Partly cloudy, with a low around 30.
Wednesday
Sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
Groton / New London Airport CT
 41.33°N 72.02°W (Elev. 43 ft)
Last Update:
2:31 pm EDT Apr 1, 2026
Forecast Valid:
4pm EDT Apr 1, 2026-6pm EDT Apr 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation