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

31°F

-1°C

Humidity 89%
Wind Speed Calm
Barometer 30.29 in (1025.8 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 8 Jan 8:56 pm EST
Extended Forecast for

Old Saybrook Center CT

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 35. Calm wind.

    Low: 35 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of rain after 4pm. Mostly cloudy, with a high near 48. South wind 5 to 14 mph.

    High: 48 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain likely, mainly between 7pm and 1am. Cloudy, with a low around 42. South wind 9 to 14 mph becoming west after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Rain Likely

  • Saturday

    Saturday: Rain, mainly after 1pm. Steady temperature around 43. Northwest wind 6 to 8 mph becoming east in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 43 °F

    Slight Chance
    Rain then
    Rain

  • Saturday Night

    Saturday Night: Rain. Steady temperature around 43. East wind 8 to 10 mph becoming north after midnight. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 43 °F

    Rain

  • Sunday

    Sunday: A 40 percent chance of rain. Mostly cloudy, with a high near 45. Breezy.

    High: 45 °F

    Chance Rain
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 31. Windy.

    Low: 31 °F

    Partly Cloudy
    and Windy

  • Monday

    Monday: Sunny, with a high near 39. Windy.

    High: 39 °F

    Sunny and
    Windy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a steady temperature around 35. Calm wind.
Friday
A 30 percent chance of rain after 4pm. Mostly cloudy, with a high near 48. South wind 5 to 14 mph.
Friday Night
Rain likely, mainly between 7pm and 1am. Cloudy, with a low around 42. South wind 9 to 14 mph becoming west after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain, mainly after 1pm. Steady temperature around 43. Northwest wind 6 to 8 mph becoming east in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Rain. Steady temperature around 43. East wind 8 to 10 mph becoming north after midnight. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 45. Breezy.
Sunday Night
Partly cloudy, with a low around 31. Windy.
Monday
Sunny, with a high near 39. Windy.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
Sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Mostly cloudy, with a high near 44.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 34.
Thursday
A 30 percent chance of rain. Partly sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Old Saybrook Center CT
 41.29°N 72.39°W (Elev. 89 ft)
Last Update:
12:58 pm EST Jan 8, 2026
Forecast Valid:
9pm EST Jan 8, 2026-6pm EST Jan 15, 2026
 
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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