National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Light Rain

44°F

7°C

Humidity 73%
Wind Speed NW 10 mph
Barometer 30.13 in (1020.4 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 20 Apr 3:56 pm EDT
Extended Forecast for

Old Saybrook Center CT

Freeze Warning April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Warning

  • This Afternoon

    This Afternoon: Isolated showers. Partly sunny, with a high near 51. Northwest wind around 11 mph. Chance of precipitation is 20%.

    High: 51 °F

    Isolated
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 30. North wind 8 to 13 mph.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Widespread frost before 7am. Otherwise, sunny, with a high near 49. Wind chill values between 20 and 30 early. North wind 5 to 7 mph becoming light and variable.

    High: 49 °F

    Frost then
    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 2am. Increasing clouds, with a low around 39. South wind around 8 mph.

    Low: 39 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly between 8am and noon. Cloudy, with a high near 51. South wind 8 to 11 mph.

    High: 51 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Isolated showers. Partly sunny, with a high near 51. Northwest wind around 11 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 30. North wind 8 to 13 mph.
Tuesday
Widespread frost before 7am. Otherwise, sunny, with a high near 49. Wind chill values between 20 and 30 early. North wind 5 to 7 mph becoming light and variable.
Tuesday Night
A 20 percent chance of showers after 2am. Increasing clouds, with a low around 39. South wind around 8 mph.
Wednesday
A 30 percent chance of showers, mainly between 8am and noon. Cloudy, with a high near 51. South wind 8 to 11 mph.
Wednesday Night
Mostly cloudy, with a low around 41.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Partly sunny, with a high near 56.
Friday Night
Partly cloudy, with a low around 42.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 50.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 42.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 52.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
Partly sunny, with a high near 55.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Old Saybrook Center CT
 41.29°N 72.39°W (Elev. 89 ft)
Last Update:
3:44 pm EDT Apr 20, 2026
Forecast Valid:
4pm EDT Apr 20, 2026-6pm EDT Apr 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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