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

48°F

9°C

Humidity 46%
Wind Speed N 17 G 30 mph
Barometer 29.88 in (1011.9 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 16 Oct 7:56 pm EDT
Extended Forecast for

Groton CT

  • Tonight

    Tonight: Clear, with a low around 44. Breezy, with a north wind 15 to 21 mph.

    Low: 44 °F

    Clear and
    Breezy then
    Clear

  • Friday

    Friday: Sunny, with a high near 60. North wind 11 to 14 mph.

    High: 60 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 44. North wind 8 to 10 mph.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 61. North wind around 6 mph becoming west in the afternoon.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53. Southwest wind around 6 mph.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 57. Breezy. Chance of precipitation is 70%.

    Low: 57 °F

    Showers
    Likely and
    Breezy

  • Monday

    Monday: Showers likely, mainly before 8am. Partly sunny, with a high near 62. Chance of precipitation is 60%.

    High: 62 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of showers. Partly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 44. Breezy, with a north wind 15 to 21 mph.
Friday
Sunny, with a high near 60. North wind 11 to 14 mph.
Friday Night
Mostly clear, with a low around 44. North wind 8 to 10 mph.
Saturday
Sunny, with a high near 61. North wind around 6 mph becoming west in the afternoon.
Saturday Night
Partly cloudy, with a low around 53. Southwest wind around 6 mph.
Sunday
Mostly sunny, with a high near 64.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 57. Breezy. Chance of precipitation is 70%.
Monday
Showers likely, mainly before 8am. Partly sunny, with a high near 62. Chance of precipitation is 60%.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 52.
Tuesday
Sunny, with a high near 62.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 55.
Wednesday
A 50 percent chance of showers. Partly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Groton CT
 41.32°N 72.06°W (Elev. 3 ft)
Last Update:
6:06 pm EDT Oct 16, 2025
Forecast Valid:
8pm EDT Oct 16, 2025-6pm EDT Oct 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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