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.

A Few Clouds

64°F

18°C

Humidity 93%
Wind Speed SW 9 mph
Barometer 29.87 in (1011.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 13 Oct 10:56 pm EDT
Extended Forecast for

Preston CT

  • Tonight

    Tonight: Partly cloudy, with a low around 61. Southwest wind around 8 mph.

    Low: 61 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80. West wind 7 to 9 mph, with gusts as high as 21 mph.

    High: 80 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49. Northwest wind around 7 mph.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 64. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely after 2am. Increasing clouds, with a low around 47. Light southeast wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Partly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers. High near 67. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 49. Breezy.

    High: 49 °F

    Sunny and
    Breezy

  • Saturday Night

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

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 61. Southwest wind around 8 mph.
Wednesday
Mostly sunny, with a high near 80. West wind 7 to 9 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 49. Northwest wind around 7 mph.
Thursday
Sunny, with a high near 64. North wind 5 to 7 mph becoming calm in the afternoon.
Thursday Night
Showers likely after 2am. Increasing clouds, with a low around 47. Light southeast wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers. High near 67. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 38.
Saturday
Sunny, with a high near 49. Breezy.
Saturday Night
Mostly clear, with a low around 30.
Sunday
Sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 37.
Monday
Mostly sunny, with a high near 61.
Monday Night
Mostly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Preston CT
 41.55°N 72°W (Elev. 220 ft)
Last Update:
9:37 pm EDT Oct 13, 2026
Forecast Valid:
11pm EDT Oct 13, 2026-6pm EDT Oct 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