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

40°F

4°C

Humidity 86%
Wind Speed S 13 mph
Barometer 30.23 in (1023.5 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 25 Mar 9:56 pm EDT
Extended Forecast for

Old Saybrook Center CT

  • Tonight

    Tonight: Cloudy, with a low around 38. South wind around 10 mph.

    Low: 38 °F

    Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 54. Southwest wind around 15 mph.

    High: 54 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Thursday Night

    Thursday Night: Showers, mainly after 2am. Low around 46. Southwest wind 10 to 14 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 46 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers, mainly before 8am. High near 50. North wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of rain showers, mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 30. North wind around 8 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Rain/Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 38. South wind around 10 mph.
Thursday
A 20 percent chance of showers before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 54. Southwest wind around 15 mph.
Thursday Night
Showers, mainly after 2am. Low around 46. Southwest wind 10 to 14 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers, mainly before 8am. High near 50. North wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A slight chance of rain showers, mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 30. North wind around 8 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 39.
Saturday Night
Mostly clear, with a low around 29.
Sunday
Sunny, with a high near 43.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Mostly cloudy, with a high near 49.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Mostly cloudy, with a high near 50.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 39.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 48.
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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:
2:46 pm EDT Mar 25, 2026
Forecast Valid:
10pm EDT Mar 25, 2026-6pm EDT Apr 1, 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