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 Fog/Mist and Breezy

6°C

43°F

Humidity 93%
Wind Speed E 33 G 52 km/h
Barometer 1015.4 mb (29.99 in)
Dewpoint 5°C (41°F)
Visibility 10 km
Wind Chill1°C (34°F)
Last update 16 Mar 4:56 am EDT
Extended Forecast for

Old Saybrook Center CT

Flood Watch until March 17, 08:00am
Wind Advisory March 16, 02:00pm until March 17, 04:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  •  
    Flood Watch until March 17, 08:00am

    NOW until 8:00am Tue

    Flood Watch

  • Overnight

    Low: 7 °C

    Showers and
    Areas Fog

  • Monday

    Monday: Showers and possibly a thunderstorm. Areas of fog. High near 13. Breezy, with a south wind 35 to 40 km/h. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 cm possible.

    High: 13 °C

    Showers and
    Areas Fog

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Areas of fog before 2am. Low around 3. Windy, with a south wind 47 to 55 km/h, with gusts as high as 75 km/h. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 cm possible.

    Low: 3 °C

    Showers and
    Areas Fog

  • Tuesday

    Tuesday: Sunny, with a high near 5. Breezy, with a west wind 27 to 32 km/h.

    High: 5 °C

    Sunny and
    Breezy then
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around -3. West wind 18 to 24 km/h.

    Low: -3 °C

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 2.

    High: 2 °C

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around -1.

    Low: -1 °C

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 5.

    High: 5 °C

    Mostly Sunny

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Areas of fog. Steady temperature around 7. Breezy, with a southeast wind around 37 km/h. Chance of precipitation is 100%.
Monday
Showers and possibly a thunderstorm. Areas of fog. High near 13. Breezy, with a south wind 35 to 40 km/h. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 cm possible.
Monday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Areas of fog before 2am. Low around 3. Windy, with a south wind 47 to 55 km/h, with gusts as high as 75 km/h. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 cm possible.
Tuesday
Sunny, with a high near 5. Breezy, with a west wind 27 to 32 km/h.
Tuesday Night
Partly cloudy, with a low around -3. West wind 18 to 24 km/h.
Wednesday
Mostly sunny, with a high near 2.
Wednesday Night
Mostly cloudy, with a low around -1.
Thursday
Mostly sunny, with a high near 5.
Thursday Night
Partly cloudy, with a low around 1.
Friday
Mostly sunny, with a high near 9.
Friday Night
Mostly cloudy, with a low around 1.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 7. Chance of precipitation is 40%.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 1.
Sunday
A chance of rain and snow. Partly sunny, with a high near 6. Chance of precipitation is 30%.
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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 m)
Last Update:
2:29 am EDT Mar 16, 2026
Forecast Valid:
5am EDT Mar 16, 2026-6pm EDT Mar 22, 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