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

38°F

3°C

Humidity 70%
Wind Speed Calm
Barometer 30.11 in (1019.7 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 7 Dec 9:56 am EST
Extended Forecast for

Preston CT

  • Today

    Today: Partly sunny, with a high near 40. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 40 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 21. Wind chill values between 10 and 15. Light and variable wind becoming northwest 8 to 13 mph after midnight.

    Low: 21 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 28. Wind chill values between 10 and 15. North wind 10 to 16 mph, with gusts as high as 29 mph.

    High: 28 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 9. North wind around 6 mph becoming calm after midnight.

    Low: 9 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 37. Calm wind becoming southwest 5 to 9 mph in the afternoon.

    High: 37 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of rain after 1pm. Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance Rain

  • Thursday

    Thursday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 40. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 21. Wind chill values between 10 and 15. Light and variable wind becoming northwest 8 to 13 mph after midnight.
Monday
Sunny, with a high near 28. Wind chill values between 10 and 15. North wind 10 to 16 mph, with gusts as high as 29 mph.
Monday Night
Partly cloudy, with a low around 9. North wind around 6 mph becoming calm after midnight.
Tuesday
Increasing clouds, with a high near 37. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
A 50 percent chance of rain after 1pm. Mostly cloudy, with a high near 46.
Wednesday Night
A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 32.
Thursday
Partly sunny, with a high near 42.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 40%.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 21.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 32.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Preston CT
 41.53°N 72.01°W (Elev. 200 ft)
Last Update:
7:42 am EST Dec 7, 2025
Forecast Valid:
10am EST Dec 7, 2025-6pm EST Dec 13, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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