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

60°F

16°C

Humidity 70%
Wind Speed NE 17 mph
Barometer 30.45 in (1031.1 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 23 Sep 8:56 am EDT
Extended Forecast for

Groton CT

  • Today

    Today: Mostly sunny, with a high near 65. Breezy, with a northeast wind 20 to 22 mph.

    High: 65 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 54. Northeast wind 15 to 18 mph.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 64. Breezy, with a northeast wind 18 to 22 mph.

    High: 64 °F

    Increasing
    Clouds and
    Breezy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 54. Breezy, with a northeast wind 18 to 22 mph.

    Low: 54 °F

    Breezy.
    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers, mainly after 8am. Mostly cloudy, with a high near 63. Windy, with a north wind around 26 mph, with gusts as high as 40 mph.

    High: 63 °F

    Chance
    Showers and
    Windy

  • Friday Night

    Friday Night: Showers likely. Mostly cloudy, with a steady temperature around 60. Windy. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Showers
    Likely and
    Windy

  • Saturday

    Saturday: Showers likely. Mostly cloudy, with a high near 62. Windy. Chance of precipitation is 70%.

    High: 62 °F

    Showers
    Likely and
    Windy

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 54. Breezy. Chance of precipitation is 70%.

    Low: 54 °F

    Showers
    Likely and
    Breezy

  • Sunday

    Sunday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 65. Breezy. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely and
    Breezy

Detailed Forecast

Today
Mostly sunny, with a high near 65. Breezy, with a northeast wind 20 to 22 mph.
Tonight
Mostly clear, with a low around 54. Northeast wind 15 to 18 mph.
Thursday
Increasing clouds, with a high near 64. Breezy, with a northeast wind 18 to 22 mph.
Thursday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 54. Breezy, with a northeast wind 18 to 22 mph.
Friday
A 50 percent chance of showers, mainly after 8am. Mostly cloudy, with a high near 63. Windy, with a north wind around 26 mph, with gusts as high as 40 mph.
Friday Night
Showers likely. Mostly cloudy, with a steady temperature around 60. Windy. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Showers likely. Mostly cloudy, with a high near 62. Windy. Chance of precipitation is 70%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 54. Breezy. Chance of precipitation is 70%.
Sunday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 65. Breezy. Chance of precipitation is 60%.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 54.
Monday
Partly sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Groton CT
 41.32°N 72.09°W (Elev. 3 ft)
Last Update:
2:32 am EDT Sep 23, 2026
Forecast Valid:
9am EDT Sep 23, 2026-6pm EDT Sep 29, 2026
 
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