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

39°F

4°C

Humidity 79%
Wind Speed S 5 mph
Barometer 30.64 in (1037.5 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 9 Apr 8:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Today

    Today: Sunny, with a high near 48. South wind 6 to 10 mph.

    High: 48 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 38. South wind 3 to 8 mph.

    Low: 38 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 53. Light southwest wind becoming south 5 to 10 mph in the morning.

    High: 53 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 2am. Increasing clouds, with a low around 43. South wind 8 to 10 mph.

    Low: 43 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 55. Northwest wind around 11 mph.

    High: 55 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 48. South wind 6 to 10 mph.
Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 38. South wind 3 to 8 mph.
Friday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 53. Light southwest wind becoming south 5 to 10 mph in the morning.
Friday Night
A 20 percent chance of showers after 2am. Increasing clouds, with a low around 43. South wind 8 to 10 mph.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 55. Northwest wind around 11 mph.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Mostly sunny, with a high near 50.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
Mostly cloudy, with a high near 60.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 67.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Partly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Old Saybrook Center CT
 41.29°N 72.39°W (Elev. 89 ft)
Last Update:
6:37 am EDT Apr 9, 2026
Forecast Valid:
9am EDT Apr 9, 2026-6pm EDT Apr 15, 2026
 
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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