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

41°F

5°C

Humidity 67%
Wind Speed SW 10 mph
Barometer 30.28 in (1025.4 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 21 Apr 10:56 pm EDT
Extended Forecast for

Old Saybrook Center CT

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 2am. Increasing clouds, with a low around 39. South wind 7 to 9 mph.

    Low: 39 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers, mainly before 11am. Cloudy, with a high near 46. Southeast wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 46 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. East wind around 6 mph becoming calm in the evening.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 60. Light west wind becoming northwest 5 to 10 mph in the morning.

    High: 60 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. North wind 5 to 7 mph.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly after 2am. Increasing clouds, with a low around 39. South wind 7 to 9 mph.
Wednesday
A 50 percent chance of showers, mainly before 11am. Cloudy, with a high near 46. Southeast wind 9 to 11 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 41. East wind around 6 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 60. Light west wind becoming northwest 5 to 10 mph in the morning.
Thursday Night
Partly cloudy, with a low around 43. North wind 5 to 7 mph.
Friday
Mostly sunny, with a high near 53.
Friday Night
Mostly clear, with a low around 40.
Saturday
Partly sunny, with a high near 49.
Saturday Night
Mostly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Partly sunny, with a high near 53.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
A 40 percent chance of showers. Partly sunny, with a high near 54.
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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:
3:50 pm EDT Apr 21, 2026
Forecast Valid:
11pm EDT Apr 21, 2026-6pm EDT Apr 28, 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