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

48°F

9°C

Humidity 89%
Wind Speed N 9 mph
Barometer 30.40 in (1029.5 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 23 Sep 2:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Overnight

    Overnight: Mostly cloudy, with a low around 54. Northeast wind around 14 mph.

    Low: 54 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66. Breezy, with a northeast wind 17 to 21 mph.

    High: 66 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. Northeast wind 13 to 16 mph, with gusts as high as 26 mph.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 66. Breezy, with a northeast wind 17 to 21 mph.

    High: 66 °F

    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 53. Breezy, with a northeast wind 17 to 22 mph.

    Low: 53 °F

    Breezy.
    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers after 8am. Mostly cloudy, with a high near 65. Windy.

    High: 65 °F

    Chance
    Showers and
    Windy

  • Friday Night

    Friday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 56. Windy. Chance of precipitation is 70%.

    Low: 56 °F

    Showers
    Likely and
    Windy

  • Saturday

    Saturday: Showers likely. Mostly cloudy, with a high near 63. Windy. Chance of precipitation is 70%.

    High: 63 °F

    Showers
    Likely and
    Windy

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 52. Breezy. Chance of precipitation is 70%.

    Low: 52 °F

    Showers
    Likely and
    Breezy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 54. Northeast wind around 14 mph.
Wednesday
Mostly sunny, with a high near 66. Breezy, with a northeast wind 17 to 21 mph.
Wednesday Night
Mostly clear, with a low around 52. Northeast wind 13 to 16 mph, with gusts as high as 26 mph.
Thursday
Mostly sunny, with a high near 66. Breezy, with a northeast wind 17 to 21 mph.
Thursday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 53. Breezy, with a northeast wind 17 to 22 mph.
Friday
A 50 percent chance of showers after 8am. Mostly cloudy, with a high near 65. Windy.
Friday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 56. Windy. Chance of precipitation is 70%.
Saturday
Showers likely. Mostly cloudy, with a high near 63. Windy. Chance of precipitation is 70%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 52. Breezy. Chance of precipitation is 70%.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 67. Breezy.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 52.
Monday
Partly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Sunny, with a high near 70.
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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:
2:32 am EDT Sep 23, 2026
Forecast Valid:
3am EDT Sep 23, 2026-6pm EDT Sep 29, 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