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

63°F

17°C

Humidity 47%
Wind Speed N 14 G 18 mph
Barometer 30.19 in (1022.1 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 15 Oct 11:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • This Afternoon

    This Afternoon: Sunny, with a high near 63. Northeast wind 3 to 7 mph.

    High: 63 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 5am. Increasing clouds, with a low around 49. Calm wind becoming southeast 5 to 7 mph after midnight.

    Low: 49 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers before 2pm, then a chance of showers and thunderstorms after 5pm. High near 70. Southwest wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Showers

  • Friday Night

    Friday Night: Showers and thunderstorms. Low around 42. Southwest wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 42 °F

    Showers

  • Saturday

    Saturday: A 30 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 54. North wind 13 to 15 mph, with gusts as high as 26 mph.

    High: 54 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Sunday Night

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

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 63. Northeast wind 3 to 7 mph.
Tonight
A 30 percent chance of showers, mainly after 5am. Increasing clouds, with a low around 49. Calm wind becoming southeast 5 to 7 mph after midnight.
Friday
Showers before 2pm, then a chance of showers and thunderstorms after 5pm. High near 70. Southwest wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms. Low around 42. Southwest wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 30 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 54. North wind 13 to 15 mph, with gusts as high as 26 mph.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
Old Saybrook Center CT
 41.29°N 72.36°W (Elev. 3 ft)
Last Update:
7:44 am EDT Oct 15, 2026
Forecast Valid:
12pm EDT Oct 15, 2026-6pm EDT Oct 21, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation