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

43°F

6°C

Humidity 71%
Wind Speed S 12 mph
Barometer 30.20 in (1022.6 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 22 Apr 4:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Overnight

    Overnight: Showers likely. Cloudy, with a low around 40. South wind around 10 mph. Chance of precipitation is 60%.

    Low: 40 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely, mainly before 11am. Cloudy, with a high near 45. South wind 11 to 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Showers
    Likely 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 59. Light west wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

    High: 59 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44. North wind 3 to 7 mph.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers likely. Cloudy, with a low around 40. South wind around 10 mph. Chance of precipitation is 60%.
Wednesday
Showers likely, mainly before 11am. Cloudy, with a high near 45. South wind 11 to 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
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 59. Light west wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Thursday Night
Mostly cloudy, with a low around 44. North wind 3 to 7 mph.
Friday
Mostly sunny, with a high near 54.
Friday Night
Mostly clear, with a low around 41.
Saturday
Partly sunny, with a high near 48.
Saturday Night
Mostly cloudy, with a low around 40.
Sunday
Partly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
A 40 percent chance of showers. Partly sunny, with a high near 53.
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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:
2:25 am EDT Apr 22, 2026
Forecast Valid:
5am EDT Apr 22, 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