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

61°F

16°C

Humidity 81%
Wind Speed N 3 mph
Barometer 29.88 in (1011.9 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 11 Sep 3:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Today

    Today: Mostly sunny, with a high near 76. North wind 6 to 9 mph.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. Northwest wind around 6 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 73. Northeast wind 5 to 9 mph becoming south in the afternoon.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 66. South wind 7 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Showers and possibly a thunderstorm before 2pm, then a slight chance of showers. High near 76. Southeast wind 6 to 10 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 76 °F

    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 76. North wind 6 to 9 mph.
Tonight
Mostly clear, with a low around 57. Northwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 73. Northeast wind 5 to 9 mph becoming south in the afternoon.
Saturday Night
A chance of showers and thunderstorms between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 66. South wind 7 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and possibly a thunderstorm before 2pm, then a slight chance of showers. High near 76. Southeast wind 6 to 10 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
Partly cloudy, with a low around 65.
Monday
Sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 77.
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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:
3:39 am EDT Sep 11, 2026
Forecast Valid:
4am EDT Sep 11, 2026-6pm EDT Sep 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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