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.

Fog/Mist

55°F

13°C

Humidity NA
Wind Speed Calm
Barometer 30.29 in (1025.5 mb)
Dewpoint N/A
Visibility 3.00 mi
Last update 5 Oct 10:56 pm EDT
Extended Forecast for

Groton / New London Airport CT

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly clear early, then becoming mostly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Patchy Fog

  • Monday

    Monday: Sunny, with a high near 75. Southwest wind 5 to 11 mph.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. Southwest wind 7 to 9 mph.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. Southwest wind 8 to 14 mph.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Showers, mainly after 2am. Low around 58. Southwest wind around 14 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 58 °F

    Chance
    Showers then
    Showers

  • Wednesday

    Wednesday: Showers, mainly before 2pm. High near 67. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    High: 67 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 43.

    Low: 43 °F

    Chance
    Showers then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly clear early, then becoming mostly cloudy, with a low around 55. Calm wind.
Monday
Sunny, with a high near 75. Southwest wind 5 to 11 mph.
Monday Night
Mostly clear, with a low around 55. Southwest wind 7 to 9 mph.
Tuesday
Sunny, with a high near 73. Southwest wind 8 to 14 mph.
Tuesday Night
Showers, mainly after 2am. Low around 58. Southwest wind around 14 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Showers, mainly before 2pm. High near 67. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Wednesday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 59.
Thursday Night
Mostly clear, with a low around 40.
Friday
Sunny, with a high near 61.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 63.
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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:
2:01 pm EDT Oct 5, 2025
Forecast Valid:
11pm EDT Oct 5, 2025-6pm EDT Oct 12, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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