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

44°F

7°C

Humidity 89%
Wind Speed S 3 mph
Barometer 29.72 in (1006.5 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 21 Mar 4:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 50. North wind 7 to 10 mph.

    High: 50 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. Light and variable wind becoming east around 5 mph after midnight.

    Low: 40 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of rain after 2pm. Mostly cloudy, with a high near 50. Southwest wind 9 to 11 mph.

    High: 50 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain, mainly after 8pm. Low around 38. Southwest wind 6 to 8 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 chance of rain, mixing with snow after 11am, then gradually ending. Mostly cloudy, with a high near 42. North wind 11 to 13 mph. Chance of precipitation is 40%.

    High: 42 °F

    Chance
    Rain/Snow

  • Monday Night

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

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 50. North wind 7 to 10 mph.
Tonight
Mostly cloudy, with a low around 40. Light and variable wind becoming east around 5 mph after midnight.
Sunday
A 30 percent chance of rain after 2pm. Mostly cloudy, with a high near 50. Southwest wind 9 to 11 mph.
Sunday Night
Rain, mainly after 8pm. Low around 38. Southwest wind 6 to 8 mph becoming north after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A chance of rain, mixing with snow after 11am, then gradually ending. Mostly cloudy, with a high near 42. North wind 11 to 13 mph. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 47.
Wednesday Night
Mostly cloudy, with a low around 35.
Thursday
Mostly cloudy, with a high near 45.
Thursday Night
Rain likely. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Friday
Rain likely. Partly sunny, with a high near 46. Chance of precipitation is 60%.
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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:
2:34 am EDT Mar 21, 2026
Forecast Valid:
5am EDT Mar 21, 2026-6pm EDT Mar 27, 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