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.

A Few Clouds

65°F

18°C

Humidity 93%
Wind Speed SW 7 mph
Barometer 29.82 in (1009.7 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 14 Oct 1:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 66. Southwest wind around 9 mph.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. West wind around 10 mph.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54. Northwest wind 8 to 11 mph.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 64. North wind 5 to 9 mph becoming light in the afternoon.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely after 2am. Increasing clouds, with a low around 53. Light southeast wind increasing to 5 to 10 mph after midnight. Chance of precipitation is 70%.

    Low: 53 °F

    Partly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers. High near 69. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 69 °F

    Showers

  • Friday Night

    Friday Night: Showers likely before 2am. Mostly cloudy, with a low around 45. Windy. Chance of precipitation is 70%.

    Low: 45 °F

    Showers
    Likely and
    Windy

  • Saturday

    Saturday: Sunny, with a high near 51. Windy.

    High: 51 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 66. Southwest wind around 9 mph.
Wednesday
Mostly sunny, with a high near 74. West wind around 10 mph.
Wednesday Night
Mostly clear, with a low around 54. Northwest wind 8 to 11 mph.
Thursday
Sunny, with a high near 64. North wind 5 to 9 mph becoming light in the afternoon.
Thursday Night
Showers likely after 2am. Increasing clouds, with a low around 53. Light southeast wind increasing to 5 to 10 mph after midnight. Chance of precipitation is 70%.
Friday
Showers. High near 69. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Showers likely before 2am. Mostly cloudy, with a low around 45. Windy. Chance of precipitation is 70%.
Saturday
Sunny, with a high near 51. Windy.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 65.
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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:
1:52 am EDT Oct 14, 2026
Forecast Valid:
2am EDT Oct 14, 2026-6pm EDT Oct 20, 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