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.

Light Rain

49°F

9°C

Humidity 90%
Wind Speed S 14 mph
Barometer 30.12 in (1020.0 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 30 Nov 2:56 pm EST
Extended Forecast for

Preston CT

  • This Afternoon

    This Afternoon: Rain. High near 46. South wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 46 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 10pm. Low around 34. West wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 34 °F

    Rain then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 41. Northwest wind 7 to 15 mph, with gusts as high as 25 mph.

    High: 41 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 23. Calm wind.

    Low: 23 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Rain, possibly mixed with snow, becoming all rain after 1pm. High near 42. Calm wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain and snow likely before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 24. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Rain/Snow
    Likely

  • Wednesday

    Wednesday: Sunny, with a high near 38.

    High: 38 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Rain. High near 46. South wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain, mainly before 10pm. Low around 34. West wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Sunny, with a high near 41. Northwest wind 7 to 15 mph, with gusts as high as 25 mph.
Monday Night
Increasing clouds, with a low around 23. Calm wind.
Tuesday
Rain, possibly mixed with snow, becoming all rain after 1pm. High near 42. Calm wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Tuesday Night
Rain and snow likely before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 24. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday
Sunny, with a high near 38.
Wednesday Night
Partly cloudy, with a low around 25.
Thursday
Partly sunny, with a high near 40.
Thursday Night
Mostly clear, with a low around 11.
Friday
Sunny, with a high near 31.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 18.
Saturday
A 40 percent chance of rain. Mostly cloudy, with a high near 39.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
Partly sunny, with a high near 39.
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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:
2:29 pm EST Nov 30, 2025
Forecast Valid:
3pm EST Nov 30, 2025-6pm EST Dec 7, 2025
 
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Additional Resources

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Chance of Precipitation