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

30°F

-1°C

Humidity 88%
Wind Speed N 3 mph
Barometer 30.00 in (1015.9 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 23 Nov 12:56 am EST
Extended Forecast for

Preston CT

  • Overnight

    Overnight: Mostly clear, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 44. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 44 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32. Wind chill values between 25 and 30. West wind 3 to 8 mph.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 48. Wind chill values between 25 and 35 early. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.

    High: 48 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 29. Calm wind.

    Low: 29 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A 30 percent chance of rain after 1pm. Cloudy, with a high near 53.

    High: 53 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 46. Chance of precipitation is 90%.

    Low: 46 °F

    Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 59.

    High: 59 °F

    Cloudy then
    Chance Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 26. Calm wind.
Sunday
Partly sunny, with a high near 44. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 32. Wind chill values between 25 and 30. West wind 3 to 8 mph.
Monday
Sunny, with a high near 48. Wind chill values between 25 and 35 early. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.
Monday Night
Increasing clouds, with a low around 29. Calm wind.
Tuesday
A 30 percent chance of rain after 1pm. Cloudy, with a high near 53.
Tuesday Night
Rain. Low around 46. Chance of precipitation is 90%.
Wednesday
A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 59.
Wednesday Night
A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 39.
Thanksgiving Day
Mostly sunny, with a high near 47.
Thursday Night
Mostly clear, with a low around 29.
Friday
Mostly sunny, with a high near 43.
Friday Night
Mostly clear, with a low around 26.
Saturday
Mostly sunny, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Preston CT
 41.53°N 72.01°W (Elev. 200 ft)
Last Update:
12:58 am EST Nov 23, 2025
Forecast Valid:
1am EST Nov 23, 2025-6pm EST Nov 29, 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