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.

Overcast

39°F

4°C

Humidity 79%
Wind Speed SE 10 mph
Barometer 29.85 in (1010.7 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 13 Mar 11:56 pm EDT
Extended Forecast for

Old Saybrook Center CT

  • Overnight

    Overnight: A 30 percent chance of showers before 2am. Partly cloudy, with a steady temperature around 41. Southwest wind around 18 mph.

    Low: 41 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 46. Breezy, with a west wind 21 to 23 mph, with gusts as high as 38 mph.

    High: 46 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 33. Northwest wind 7 to 15 mph.

    Low: 33 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 43. Light and variable wind becoming southeast 5 to 10 mph in the morning.

    High: 43 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain likely after 2am. Mostly cloudy, with a steady temperature around 41. Southeast wind 10 to 18 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Mostly Cloudy
    then Rain
    Likely

  • Monday

    Monday: Rain. High near 55. Breezy. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 55 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: Rain and possibly a thunderstorm. Low around 39. Chance of precipitation is 100%.

    Low: 39 °F

    Rain

  • Tuesday

    Tuesday: Rain likely before 8am. Mostly sunny, with a high near 43. Chance of precipitation is 60%.

    High: 43 °F

    Rain Likely
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers before 2am. Partly cloudy, with a steady temperature around 41. Southwest wind around 18 mph.
Saturday
Sunny, with a high near 46. Breezy, with a west wind 21 to 23 mph, with gusts as high as 38 mph.
Saturday Night
Increasing clouds, with a low around 33. Northwest wind 7 to 15 mph.
Sunday
Mostly cloudy, with a high near 43. Light and variable wind becoming southeast 5 to 10 mph in the morning.
Sunday Night
Rain likely after 2am. Mostly cloudy, with a steady temperature around 41. Southeast wind 10 to 18 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain. High near 55. Breezy. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Monday Night
Rain and possibly a thunderstorm. Low around 39. Chance of precipitation is 100%.
Tuesday
Rain likely before 8am. Mostly sunny, with a high near 43. Chance of precipitation is 60%.
Tuesday Night
Mostly clear, with a low around 26.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Partly sunny, with a high near 41.
Thursday Night
Partly cloudy, with a low around 35.
Friday
Partly sunny, 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:
9:14 pm EDT Mar 13, 2026
Forecast Valid:
12am EDT Mar 14, 2026-6pm EDT Mar 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