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

71°F

22°C

Humidity 79%
Wind Speed S 5 mph
Barometer 29.88 in (1011.7 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 14 Jun 8:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Today

    Today: Partly sunny, with a high near 76. Light southwest wind becoming south 9 to 14 mph in the morning.

    High: 76 °F

    Partly Sunny

  • Tonight

    Tonight: Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Low around 62. South wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Showers

  • Monday

    Monday: A 30 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 73. West wind 9 to 13 mph.

    High: 73 °F

    Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. Northwest wind 6 to 8 mph.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 69. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 76. Light southwest wind becoming south 9 to 14 mph in the morning.
Tonight
Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Low around 62. South wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 73. West wind 9 to 13 mph.
Monday Night
Mostly clear, with a low around 57. Northwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 69. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 69.
Wednesday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 60.
Thursday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 71.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 62.
Juneteenth
A 30 percent chance of showers. Partly sunny, with a high near 71.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 59.
Saturday
Sunny, with a high near 72.
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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:
7:49 am EDT Jun 14, 2026
Forecast Valid:
9am EDT Jun 14, 2026-6pm EDT Jun 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