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.

A Few Clouds and Breezy

47°F

8°C

Humidity 30%
Wind Speed NW 21 G 40 mph
Barometer 30.00 in (1015.9 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 14 Mar 4:56 pm EDT
Extended Forecast for

Old Saybrook Center CT

  • Tonight

    Tonight: Mostly clear, with a low around 32. Northwest wind 7 to 17 mph, with gusts as high as 31 mph.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 43. Light and variable wind becoming southeast 6 to 11 mph in the morning.

    High: 43 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Showers after 2am. Temperature falling to near 39 by 8pm, then rising to around 45 during the remainder of the night. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F⇑

    Mostly Cloudy
    then Showers

  • Monday

    Monday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 55. Breezy, with a south wind 22 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 55 °F

    Heavy Rain
    and Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 36. Windy, with a south wind 28 to 31 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 36 °F

    Heavy Rain
    and Windy

  • Tuesday

    Tuesday: Showers likely before 8am. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 37 by 8am. Breezy. Chance of precipitation is 60%.

    High: 40 °F⇓

    Breezy.
    Showers
    Likely then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 32. Northwest wind 7 to 17 mph, with gusts as high as 31 mph.
Sunday
Partly sunny, with a high near 43. Light and variable wind becoming southeast 6 to 11 mph in the morning.
Sunday Night
Showers after 2am. Temperature falling to near 39 by 8pm, then rising to around 45 during the remainder of the night. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 55. Breezy, with a south wind 22 to 24 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Monday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 36. Windy, with a south wind 28 to 31 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Showers likely before 8am. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 37 by 8am. Breezy. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
Partly sunny, with a high near 41.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 45.
Friday Night
A 30 percent chance of rain. Partly cloudy, with a low around 35.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 44.
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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:
2:22 pm EDT Mar 14, 2026
Forecast Valid:
5pm EDT Mar 14, 2026-6pm EDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation