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

35°F

2°C

Humidity 93%
Wind Speed Calm
Barometer 30.39 in (1029.2 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 6 Mar 11:56 pm EST
Extended Forecast for

Old Saybrook Center CT

  • Overnight

    Overnight: Cloudy, with a low around 34. Light northeast wind.

    Low: 34 °F

    Cloudy

  • Saturday

    Saturday: Cloudy, with a high near 47. Calm wind becoming south 5 to 8 mph in the morning.

    High: 47 °F

    Cloudy

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely after 1am. Areas of dense fog after 1am. Otherwise, cloudy, with a low around 44. Southwest wind 9 to 13 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Chance
    Showers then
    Showers
    Likely and
    Areas Dense
    Fog

  • Sunday

    Sunday: A 30 percent chance of showers before 1pm. Areas of fog before 1pm. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 55. West wind around 10 mph.

    High: 55 °F

    Chance
    Showers and
    Areas Fog

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. West wind around 6 mph.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Monday Night

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

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 34. Light northeast wind.
Saturday
Cloudy, with a high near 47. Calm wind becoming south 5 to 8 mph in the morning.
Saturday Night
A chance of showers and thunderstorms, then showers likely after 1am. Areas of dense fog after 1am. Otherwise, cloudy, with a low around 44. Southwest wind 9 to 13 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A 30 percent chance of showers before 1pm. Areas of fog before 1pm. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 55. West wind around 10 mph.
Sunday Night
Mostly clear, with a low around 38. West wind around 6 mph.
Monday
Sunny, with a high near 54.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Mostly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 43.
Wednesday
A 50 percent chance of rain. Cloudy, with a high near 51.
Wednesday Night
Rain likely. Cloudy, with a low around 39. Chance of precipitation is 60%.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 45.
Thursday Night
Mostly cloudy, with a low around 31.
Friday
Mostly cloudy, with a high near 43.
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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:
12:51 pm EST Mar 6, 2026
Forecast Valid:
12am EST Mar 7, 2026-6pm EDT Mar 13, 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