National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Overcast

26°F

-3°C

Humidity 81%
Wind Speed Calm
Barometer 30.59 in (1035.6 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 29 Mar 6:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Today

    Today: Mostly sunny, with a high near 45. Light southwest wind increasing to 9 to 14 mph in the morning.

    High: 45 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 41. Southwest wind around 14 mph.

    Low: 41 °F

    Increasing
    Clouds

  • Monday

    Monday: A 20 percent chance of showers after 2pm. Partly sunny, with a high near 54. Southwest wind 14 to 16 mph.

    High: 54 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 46. Southwest wind 8 to 13 mph. Chance of precipitation is 20%.

    Low: 46 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly between 8am and 2pm. Partly sunny, with a high near 56. Southwest wind 9 to 16 mph.

    High: 56 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers after 2pm. Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Rain likely. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.

    Low: 43 °F

    Rain Likely

  • Thursday

    Thursday: A 50 percent chance of rain. Mostly cloudy, with a high near 46.

    High: 46 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 45. Light southwest wind increasing to 9 to 14 mph in the morning.
Tonight
Increasing clouds, with a low around 41. Southwest wind around 14 mph.
Monday
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 54. Southwest wind 14 to 16 mph.
Monday Night
A slight chance of showers before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 46. Southwest wind 8 to 13 mph. Chance of precipitation is 20%.
Tuesday
A 30 percent chance of showers, mainly between 8am and 2pm. Partly sunny, with a high near 56. Southwest wind 9 to 16 mph.
Tuesday Night
Mostly cloudy, with a low around 50.
Wednesday
A 40 percent chance of showers after 2pm. Mostly sunny, with a high near 60.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 46.
Thursday Night
A 50 percent chance of rain. Cloudy, with a low around 38.
Friday
Rain likely. Cloudy, with a high near 46. Chance of precipitation is 60%.
Friday Night
Rain likely. Cloudy, with a low around 41. Chance of precipitation is 60%.
Saturday
A 40 percent chance of rain. Cloudy, with a high near 47.
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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:
2:25 am EDT Mar 29, 2026
Forecast Valid:
7am EDT Mar 29, 2026-6pm EDT Apr 4, 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