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.

Light Rain Fog/Mist

48°F

9°C

Humidity 96%
Wind Speed S 8 mph
Barometer 29.75 in (1007.2 mb)
Dewpoint 47°F (8°C)
Visibility 2.00 mi
Wind Chill44°F (7°C)
Last update 5 Apr 5:56 pm EDT
Extended Forecast for

Old Saybrook Center CT

  • Tonight

    Tonight: Rain likely, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 39. Southwest wind around 10 mph becoming northwest in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Rain Likely
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 49. West wind around 14 mph.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers, mainly after 2am. Partly cloudy, with a low around 38. West wind around 6 mph becoming light and variable after midnight.

    Low: 38 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly before 2pm. Mostly sunny, with a high near 47. West wind 7 to 13 mph.

    High: 47 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 31. Northwest wind 9 to 13 mph.

    Low: 31 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 34.

    Low: 34 °F

    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Tonight
Rain likely, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 39. Southwest wind around 10 mph becoming northwest in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Sunny, with a high near 49. West wind around 14 mph.
Monday Night
A 30 percent chance of showers, mainly after 2am. Partly cloudy, with a low around 38. West wind around 6 mph becoming light and variable after midnight.
Tuesday
A 30 percent chance of showers, mainly before 2pm. Mostly sunny, with a high near 47. West wind 7 to 13 mph.
Tuesday Night
Mostly clear, with a low around 31. Northwest wind 9 to 13 mph.
Wednesday
Sunny, with a high near 43.
Wednesday Night
Clear, with a low around 34.
Thursday
Mostly sunny, with a high near 47.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 57.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
Mostly sunny, with a high near 55.
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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:
6:30 pm EDT Apr 5, 2026
Forecast Valid:
6pm EDT Apr 5, 2026-6pm EDT Apr 12, 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