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.

Fog/Mist

39°F

4°C

Humidity 96%
Wind Speed NE 7 mph
Barometer 30.37 in (1028.5 mb)
Dewpoint 38°F (3°C)
Visibility 4.00 mi
Wind Chill34°F (1°C)
Last update 3 Apr 4:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Overnight

    Overnight: A 20 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 38. East wind around 6 mph.

    Low: 38 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: Patchy fog. Otherwise, mostly cloudy, with a high near 53. East wind 5 to 9 mph becoming southwest in the afternoon.

    High: 53 °F

    Patchy Fog

  • Friday Night

    Friday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 50. Southwest wind 8 to 10 mph.

    Low: 50 °F

    Patchy Fog

  • Saturday

    Saturday: A 20 percent chance of showers after 2pm. Partly sunny, with a high near 61. Light and variable wind becoming southeast 5 to 9 mph in the afternoon.

    High: 61 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after 2am. Cloudy, with a low around 42. East wind 10 to 16 mph. Chance of precipitation is 60%.

    Low: 42 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers. High near 56. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers
    Likely then
    Showers

  • Sunday Night

    Sunday Night: Showers before 8pm. Low around 40. Chance of precipitation is 80%.

    Low: 40 °F

    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 38. East wind around 6 mph.
Friday
Patchy fog. Otherwise, mostly cloudy, with a high near 53. East wind 5 to 9 mph becoming southwest in the afternoon.
Friday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 50. Southwest wind 8 to 10 mph.
Saturday
A 20 percent chance of showers after 2pm. Partly sunny, with a high near 61. Light and variable wind becoming southeast 5 to 9 mph in the afternoon.
Saturday Night
Showers likely, mainly after 2am. Cloudy, with a low around 42. East wind 10 to 16 mph. Chance of precipitation is 60%.
Sunday
Showers. High near 56. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers before 8pm. Low around 40. Chance of precipitation is 80%.
Monday
Mostly sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
A chance of rain and snow showers before 2pm, then a chance of rain showers. Partly sunny, with a high near 46. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 31.
Wednesday
Sunny, with a high near 45.
Wednesday Night
Mostly clear, with a low around 37.
Thursday
Mostly sunny, with a high near 51.
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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:
2:20 am EDT Apr 3, 2026
Forecast Valid:
5am EDT Apr 3, 2026-6pm EDT Apr 9, 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