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

39°F

4°C

Humidity 93%
Wind Speed Calm
Barometer 30.00 in (1015.8 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 11 Mar 3:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Today

    Today: A 20 percent chance of showers after 2pm. Partly sunny, with a high near 61. Light east wind becoming southeast 5 to 10 mph in the morning.

    High: 61 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms. Areas of fog between 11pm and 3am. Otherwise, mostly cloudy, with a low around 42. South wind 13 to 15 mph.

    Low: 42 °F

    Chance
    Showers and
    Areas Fog

  • Thursday

    Thursday: A chance of rain showers before 2pm, then a slight chance of rain and snow showers. Mostly cloudy, with a temperature rising to near 53 by 9am, then falling to around 40 during the remainder of the day. Northwest wind 15 to 17 mph. Chance of precipitation is 50%.

    High: 53 °F⇓

    Chance
    Showers then
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Northwest wind 9 to 13 mph.

    Low: 30 °F

    Gradual
    Clearing

  • Friday

    Friday: Increasing clouds, with a high near 44. West wind 6 to 16 mph becoming south in the afternoon.

    High: 44 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A 30 percent chance of showers before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 36.

    Low: 36 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 45. Breezy.

    High: 45 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 46.

    High: 46 °F

    Cloudy

Detailed Forecast

Today
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 61. Light east wind becoming southeast 5 to 10 mph in the morning.
Tonight
A 40 percent chance of showers and thunderstorms. Areas of fog between 11pm and 3am. Otherwise, mostly cloudy, with a low around 42. South wind 13 to 15 mph.
Thursday
A chance of rain showers before 2pm, then a slight chance of rain and snow showers. Mostly cloudy, with a temperature rising to near 53 by 9am, then falling to around 40 during the remainder of the day. Northwest wind 15 to 17 mph. Chance of precipitation is 50%.
Thursday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Northwest wind 9 to 13 mph.
Friday
Increasing clouds, with a high near 44. West wind 6 to 16 mph becoming south in the afternoon.
Friday Night
A 30 percent chance of showers before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 36.
Saturday
Sunny, with a high near 45. Breezy.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Cloudy, with a high near 46.
Sunday Night
Rain, mainly after 2am. Low around 41. Breezy. Chance of precipitation is 80%.
Monday
Rain. High near 52. Breezy. Chance of precipitation is 90%.
Monday Night
Rain likely. Mostly cloudy, with a low around 32. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 39.
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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:
3:05 am EDT Mar 11, 2026
Forecast Valid:
4am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation