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

29°F

-2°C

Humidity 36%
Wind Speed SW 10 mph
Barometer 30.12 in (1020.0 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 9 Dec 2:56 pm EST
Extended Forecast for

Preston CT

  • Tonight

    Tonight: A slight chance of snow, mixing with rain after midnight, then gradually ending. Mostly cloudy, with a temperature falling to near 24 by 8pm, then rising to around 33 during the remainder of the night. Wind chill values between 15 and 20. Southwest wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 24 °F⇑

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Wednesday

    Wednesday: Rain likely after 1pm. Mostly cloudy, with a high near 46. Wind chill values between 20 and 30 early. Southwest wind 8 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 46 °F

    Partly Sunny
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 28. Southwest wind 9 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    Low: 28 °F

    Rain Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 34. Wind chill values between 15 and 25. West wind 13 to 17 mph, with gusts as high as 32 mph.

    High: 34 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 18. West wind 10 to 14 mph, with gusts as high as 30 mph.

    Low: 18 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 35.

    High: 35 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 39.

    High: 39 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of snow, mixing with rain after midnight, then gradually ending. Mostly cloudy, with a temperature falling to near 24 by 8pm, then rising to around 33 during the remainder of the night. Wind chill values between 15 and 20. Southwest wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Wednesday
Rain likely after 1pm. Mostly cloudy, with a high near 46. Wind chill values between 20 and 30 early. Southwest wind 8 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain likely, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 28. Southwest wind 9 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 34. Wind chill values between 15 and 25. West wind 13 to 17 mph, with gusts as high as 32 mph.
Thursday Night
Mostly clear, with a low around 18. West wind 10 to 14 mph, with gusts as high as 30 mph.
Friday
Sunny, with a high near 35.
Friday Night
Mostly cloudy, with a low around 22.
Saturday
Mostly cloudy, with a high near 39.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
A 40 percent chance of snow. Mostly cloudy, with a high near 35.
Sunday Night
Mostly clear, with a low around 14.
Monday
Sunny, with a high near 28.
Monday Night
Mostly cloudy, with a low around 16.
Tuesday
Mostly sunny, with a high near 32.
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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:
3:34 pm EST Dec 9, 2025
Forecast Valid:
3pm EST Dec 9, 2025-6pm EST Dec 16, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation