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

32°F

0°C

Humidity 88%
Wind Speed Calm
Barometer 30.38 in (1028.7 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 25 Mar 6:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Today

    Today: Partly sunny, with a high near 47. Southwest wind 3 to 7 mph.

    High: 47 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. South wind 6 to 8 mph.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 53. Southwest wind 11 to 15 mph.

    High: 53 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Rain, mainly after 2am. Low around 46. Southwest wind 11 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 46 °F

    Chance Rain
    then Rain

  • Friday

    Friday: Rain, mainly before 8am. Temperature falling to around 45 by 4pm. North wind 11 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 48 °F⇓

    Rain then
    Chance Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 44.

    High: 44 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 47. Southwest wind 3 to 7 mph.
Tonight
Mostly cloudy, with a low around 40. South wind 6 to 8 mph.
Thursday
Mostly cloudy, with a high near 53. Southwest wind 11 to 15 mph.
Thursday Night
Rain, mainly after 2am. Low around 46. Southwest wind 11 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain, mainly before 8am. Temperature falling to around 45 by 4pm. North wind 11 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Partly cloudy, with a low around 29.
Saturday
Sunny, with a high near 39.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Sunny, with a high near 44.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 49.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Partly sunny, with a high near 51.
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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:
2:27 am EDT Mar 25, 2026
Forecast Valid:
7am EDT Mar 25, 2026-6pm EDT Mar 31, 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