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.

Mostly Cloudy

42°F

6°C

Humidity 85%
Wind Speed SW 7 mph
Barometer 29.73 in (1006.8 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 14 Jan 12:56 am EST
Extended Forecast for

Old Saybrook Center CT

  • Overnight

    Overnight: Isolated showers. Cloudy, with a steady temperature around 44. Southwest wind 11 to 13 mph. Chance of precipitation is 20%.

    Low: 44 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers between 10am and 1pm. Mostly cloudy, with a high near 46. Southwest wind 7 to 10 mph.

    High: 46 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly between 1am and 4am. Cloudy, with a steady temperature around 43. South wind 6 to 8 mph becoming west after midnight. Chance of precipitation is 60%.

    Low: 43 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 32 by 5pm. Wind chill values between 20 and 30. Breezy, with a west wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon.

    High: 43 °F⇓

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 21. Breezy, with a west wind 20 to 22 mph.

    Low: 21 °F

    Partly Cloudy
    and Breezy

  • Friday

    Friday: Sunny, with a high near 35. Breezy.

    High: 35 °F

    Sunny and
    Breezy then
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Isolated showers. Cloudy, with a steady temperature around 44. Southwest wind 11 to 13 mph. Chance of precipitation is 20%.
Wednesday
A 20 percent chance of showers between 10am and 1pm. Mostly cloudy, with a high near 46. Southwest wind 7 to 10 mph.
Wednesday Night
Showers likely, mainly between 1am and 4am. Cloudy, with a steady temperature around 43. South wind 6 to 8 mph becoming west after midnight. Chance of precipitation is 60%.
Thursday
A 30 percent chance of showers, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 32 by 5pm. Wind chill values between 20 and 30. Breezy, with a west wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 21. Breezy, with a west wind 20 to 22 mph.
Friday
Sunny, with a high near 35. Breezy.
Friday Night
Mostly cloudy, with a low around 31.
Saturday
A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
Partly sunny, with a high near 34.
Sunday Night
Partly cloudy, with a low around 24.
M.L.King Day
Mostly sunny, with a high near 33.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 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 ft)
Last Update:
1:35 am EST Jan 14, 2026
Forecast Valid:
1am EST Jan 14, 2026-6pm EST Jan 20, 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