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.

Overcast

47°F

8°C

Humidity 97%
Wind Speed Calm
Barometer 29.76 in (1007.6 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 30 Apr 5:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Today

    Today: Showers likely, mainly before 11am. Mostly cloudy, with a high near 53. Light southeast wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 45. Northwest wind 5 to 8 mph.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 57. West wind around 11 mph.

    High: 57 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 2am. Increasing clouds, with a low around 44. West wind 3 to 7 mph.

    Low: 44 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of rain, mainly after 2pm. Mostly cloudy, with a high near 53. Calm wind becoming south around 6 mph in the afternoon.

    High: 53 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Chance Rain

  • Sunday

    Sunday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

Detailed Forecast

Today
Showers likely, mainly before 11am. Mostly cloudy, with a high near 53. Light southeast wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Partly cloudy, with a low around 45. Northwest wind 5 to 8 mph.
Friday
Sunny, with a high near 57. West wind around 11 mph.
Friday Night
A 20 percent chance of showers after 2am. Increasing clouds, with a low around 44. West wind 3 to 7 mph.
Saturday
A 40 percent chance of rain, mainly after 2pm. Mostly cloudy, with a high near 53. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 50.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Old Saybrook Center CT
 41.29°N 72.39°W (Elev. 89 ft)
Last Update:
4:33 am EDT Apr 30, 2026
Forecast Valid:
6am EDT Apr 30, 2026-6pm EDT May 6, 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