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 72%
Wind Speed S 5 mph
Barometer 29.88 in (1011.9 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 15 Apr 8:56 pm EDT
Extended Forecast for

Old Saybrook Center CT

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 54. South wind 3 to 6 mph. Chance of precipitation is 40%.

    Low: 54 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 70. Light southwest wind increasing to 5 to 9 mph in the morning.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 54. Southwest wind 5 to 9 mph becoming light after midnight.

    Low: 54 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 67. West wind 3 to 6 mph. Chance of precipitation is 50%.

    High: 67 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 51. Northeast wind around 6 mph. Chance of precipitation is 30%.

    Low: 51 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a steady temperature around 52.

    High: 52 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 8am. Cloudy, with a high near 53. Chance of precipitation is 70%.

    High: 53 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 54. South wind 3 to 6 mph. Chance of precipitation is 40%.
Thursday
Mostly sunny, with a high near 70. Light southwest wind increasing to 5 to 9 mph in the morning.
Thursday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 54. Southwest wind 5 to 9 mph becoming light after midnight.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 67. West wind 3 to 6 mph. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 51. Northeast wind around 6 mph. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a steady temperature around 52.
Saturday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 47.
Sunday
Showers likely, mainly after 8am. Cloudy, with a high near 53. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 46.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 48.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Partly sunny, with a high near 58.
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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:
7:26 pm EDT Apr 15, 2026
Forecast Valid:
9pm EDT Apr 15, 2026-6pm EDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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