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

64°F

18°C

Humidity 78%
Wind Speed NW 10 mph
Barometer 29.79 in (1008.6 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 12 Oct 6:56 pm EDT
Extended Forecast for

Groton CT

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57. Northwest wind 5 to 7 mph becoming north after midnight.

    Low: 57 °F

    Patchy Fog

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 66. East wind 9 to 11 mph becoming south in the afternoon.

    High: 66 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 64. South wind 8 to 15 mph.

    Low: 64 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. West wind around 11 mph.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. Northwest wind around 9 mph.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Friday

    Friday: Showers after 8am. High near 66. Chance of precipitation is 90%.

    High: 66 °F

    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 45. Breezy.

    Low: 45 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Tonight
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57. Northwest wind 5 to 7 mph becoming north after midnight.
Tuesday
Mostly cloudy, with a high near 66. East wind 9 to 11 mph becoming south in the afternoon.
Tuesday Night
A 20 percent chance of showers before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 64. South wind 8 to 15 mph.
Wednesday
Mostly sunny, with a high near 74. West wind around 11 mph.
Wednesday Night
Partly cloudy, with a low around 56. Northwest wind around 9 mph.
Thursday
Sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 50.
Friday
Showers after 8am. High near 66. Chance of precipitation is 90%.
Friday Night
A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 45. Breezy.
Saturday
Mostly sunny, with a high near 53. Windy.
Saturday Night
Mostly clear, with a low around 38. Breezy.
Sunday
Sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 44.
Monday
Mostly sunny, with a high near 61.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Groton CT
 41.32°N 72.06°W (Elev. 3 ft)
Last Update:
2:47 pm EDT Oct 12, 2026
Forecast Valid:
7pm EDT Oct 12, 2026-6pm EDT Oct 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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