National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Overcast

31°F

-1°C

Humidity 52%
Wind Speed SW 9 mph
Barometer 29.78 in (1008.1 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 31 Dec 6:53 pm EST
Extended Forecast for

2 Miles SSE Princeton Junction NJ

  • Tonight

    Tonight: A chance of snow showers after 2am. The snow could be heavy at times. Cloudy, with a low around 23. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 23 °F

    Heavy Snow

  • New Year's Day

    New Year's Day: A chance of snow showers, mainly before 8am. The snow could be heavy at times. Mostly cloudy, then gradually becoming sunny, with a high near 32. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 32 °F

    Breezy. Heavy
    Snow then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 17. West wind 5 to 10 mph.

    Low: 17 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 33. West wind 5 to 10 mph.

    High: 33 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 18. West wind around 5 mph.

    Low: 18 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Saturday Night

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

    Low: 22 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of snow showers after 2am. The snow could be heavy at times. Cloudy, with a low around 23. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. Total nighttime snow accumulation of less than a half inch possible.
New Year's Day
A chance of snow showers, mainly before 8am. The snow could be heavy at times. Mostly cloudy, then gradually becoming sunny, with a high near 32. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Thursday Night
Mostly cloudy, with a low around 17. West wind 5 to 10 mph.
Friday
Partly sunny, with a high near 33. West wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 18. West wind around 5 mph.
Saturday
Partly sunny, with a high near 35.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Mostly sunny, with a high near 38.
Sunday Night
Partly cloudy, with a low around 17.
Monday
Partly sunny, with a high near 34.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Partly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Princeton Junction NJ
 40.29°N 74.6°W (Elev. 98 ft)
Last Update:
7:15 pm EST Dec 31, 2025
Forecast Valid:
7pm EST Dec 31, 2025-6pm EST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation