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.

Fair

60°F

16°C

Humidity 48%
Wind Speed N 8 mph
Barometer 29.88 in (1011.8 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 17 Oct 2:56 pm EDT
Extended Forecast for

Stonington CT

  • Tonight

    Tonight: Mostly clear, with a low around 37. North wind 6 to 8 mph.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy frost before 8am. Otherwise, sunny, with a high near 62. North wind around 5 mph becoming light and variable.

    High: 62 °F

    Patchy Frost
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49. Light southwest wind.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 66. South wind 6 to 14 mph.

    High: 66 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 56. South wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 56 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%. New precipitation amounts between three quarters and one inch possible.

    High: 64 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of showers before 2am. Partly cloudy, with a low around 49.

    Low: 49 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 37. North wind 6 to 8 mph.
Saturday
Patchy frost before 8am. Otherwise, sunny, with a high near 62. North wind around 5 mph becoming light and variable.
Saturday Night
Partly cloudy, with a low around 49. Light southwest wind.
Sunday
Mostly sunny, with a high near 66. South wind 6 to 14 mph.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 56. South wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%. New precipitation amounts between three quarters and one inch possible.
Monday Night
A 30 percent chance of showers before 2am. Partly cloudy, with a low around 49.
Tuesday
Sunny, with a high near 64.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 52.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Partly cloudy, with a low around 45.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Stonington CT
 41.35°N 71.93°W (Elev. 3 ft)
Last Update:
2:05 pm EDT Oct 17, 2025
Forecast Valid:
3pm EDT Oct 17, 2025-6pm EDT Oct 24, 2025
 
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