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

29°F

-2°C

Humidity 66%
Wind Speed S 9 mph
Barometer 30.38 in (1028.6 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 19 Mar 1:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Overnight

    Overnight: Partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 40. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 40 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 32. South wind 3 to 5 mph.

    Low: 32 °F

    Partly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 48. South wind 3 to 8 mph.

    High: 48 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 38. South wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Chance Rain
    then Rain
    Likely

  • Saturday

    Saturday: A 30 percent chance of rain before 8am. Partly sunny, with a high near 51.

    High: 51 °F

    Chance Rain
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 27. Calm wind.
Thursday
Mostly sunny, with a high near 40. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 32. South wind 3 to 5 mph.
Friday
Increasing clouds, with a high near 48. South wind 3 to 8 mph.
Friday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 38. South wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A 30 percent chance of rain before 8am. Partly sunny, with a high near 51.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
Partly sunny, with a high near 53.
Sunday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 35.
Monday
Mostly sunny, with a high near 45.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
Partly sunny, with a high near 47.
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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:
5:35 pm EDT Mar 18, 2026
Forecast Valid:
2am EDT Mar 19, 2026-6pm EDT Mar 25, 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