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.

Mostly Cloudy

40°F

4°C

Humidity 86%
Wind Speed Calm
Barometer 30.03 in (1016.9 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 22 Mar 1:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Overnight

    Overnight: Mostly cloudy, with a low around 39. Light southeast wind.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 47. South wind around 9 mph.

    High: 47 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Rain. Low around 38. West wind 5 to 7 mph becoming north after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Rain

  • Monday

    Monday: A 40 percent chance of rain before 2pm. Cloudy, with a high near 43. North wind 11 to 13 mph.

    High: 43 °F

    Chance Rain

  • Monday Night

    Monday Night: Mostly clear, with a low around 31. North wind around 10 mph.

    Low: 31 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 35.

    Low: 35 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 39. Light southeast wind.
Sunday
A 30 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 47. South wind around 9 mph.
Sunday Night
Rain. Low around 38. West wind 5 to 7 mph becoming north after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 40 percent chance of rain before 2pm. Cloudy, with a high near 43. North wind 11 to 13 mph.
Monday Night
Mostly clear, with a low around 31. North wind around 10 mph.
Tuesday
Sunny, with a high near 43.
Tuesday Night
Increasing clouds, with a low around 35.
Wednesday
Partly sunny, with a high near 47.
Wednesday Night
Mostly cloudy, with a low around 36.
Thursday
A 30 percent chance of rain after 8am. Partly sunny, with a high near 48.
Thursday Night
Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 46.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Sunny, with a high near 40.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Old Saybrook Center CT
 41.29°N 72.39°W (Elev. 89 ft)
Last Update:
3:03 pm EDT Mar 21, 2026
Forecast Valid:
2am EDT Mar 22, 2026-6pm EDT Mar 28, 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