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

47°F

8°C

Humidity 100%
Wind Speed S 6 mph
Barometer 29.66 in (1004.4 mb)
Dewpoint 47°F (8°C)
Visibility 3.00 mi
Wind Chill44°F (7°C)
Last update 12 Mar 1:56 am EDT
Extended Forecast for

Old Saybrook Center CT

  • Overnight

    Overnight: A 50 percent chance of showers. Mostly cloudy, with a steady temperature around 50. Southwest wind around 15 mph.

    Low: 50 °F

    Chance
    Showers

  • Thursday

    Thursday: Rain showers likely before 5pm, then a chance of rain and snow showers. Cloudy, with a temperature falling to around 39 by 4pm. Southwest wind 14 to 18 mph becoming northwest in the morning. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 49 °F⇓

    Showers
    Likely then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of rain and snow showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 32. West wind 9 to 15 mph. Chance of precipitation is 30%.

    Low: 32 °F

    Chance
    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Increasing clouds, with a high near 43. West wind 6 to 15 mph becoming south in the afternoon.

    High: 43 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 37. South wind 15 to 17 mph.

    Low: 37 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 46. Breezy.

    High: 46 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 44.

    High: 44 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Cloudy, with a low around 39. Chance of precipitation is 70%.

    Low: 39 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Overnight
A 50 percent chance of showers. Mostly cloudy, with a steady temperature around 50. Southwest wind around 15 mph.
Thursday
Rain showers likely before 5pm, then a chance of rain and snow showers. Cloudy, with a temperature falling to around 39 by 4pm. Southwest wind 14 to 18 mph becoming northwest in the morning. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday Night
A chance of rain and snow showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 32. West wind 9 to 15 mph. Chance of precipitation is 30%.
Friday
Increasing clouds, with a high near 43. West wind 6 to 15 mph becoming south in the afternoon.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 37. South wind 15 to 17 mph.
Saturday
Sunny, with a high near 46. Breezy.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly cloudy, with a high near 44.
Sunday Night
Showers likely, mainly after 2am. Cloudy, with a low around 39. Chance of precipitation is 70%.
Monday
Showers. High near 53. Breezy. Chance of precipitation is 90%.
Monday Night
Showers likely. Mostly cloudy, with a low around 32. Chance of precipitation is 60%.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 39.
Tuesday Night
Mostly clear, with a low around 24.
Wednesday
Mostly sunny, with a high near 35.
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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:
7:41 pm EDT Mar 11, 2026
Forecast Valid:
2am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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