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

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

15°F

-9°C

Humidity 56%
Wind Speed W 3 mph
Barometer 30.12 in (1019.5 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Last update 28 Jan 1:53 am EST
Extended Forecast for

Princeton Junction NJ

Cold Weather Advisory January 28, 02:42am until January 29, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 28, 02:42am until January 29, 10:00am

    NOW until 10:00am Thu

    Cold Weather Advisory

  • Overnight

    Low: 1 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 20. Wind chill values as low as -11. West wind around 5 mph.

    High: 20 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 1. Wind chill values as low as -8. Calm wind.

    Low: 1 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 20. Wind chill values as low as -10. West wind 5 to 10 mph.

    High: 20 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around -1. West wind around 5 mph.

    Low: -1 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 18.

    High: 18 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -3.

    Low: -3 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 19.

    High: 19 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 1. Wind chill values as low as -8. West wind around 5 mph.
Wednesday
Increasing clouds, with a high near 20. Wind chill values as low as -11. West wind around 5 mph.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 1. Wind chill values as low as -8. Calm wind.
Thursday
Sunny, with a high near 20. Wind chill values as low as -10. West wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around -1. West wind around 5 mph.
Friday
Sunny, with a high near 18.
Friday Night
Mostly cloudy, with a low around -3.
Saturday
Mostly cloudy, with a high near 19.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 10. Chance of precipitation is 30%.
Sunday
A chance of snow. Cloudy, with a high near 25. Chance of precipitation is 40%.
Sunday Night
Mostly cloudy, with a low around 15.
Monday
Mostly sunny, with a high near 31.
Monday Night
Mostly cloudy, with a low around 13.
Tuesday
Partly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton Junction NJ
 40.32°N 74.62°W (Elev. 85 ft)
Last Update:
12:42 am EST Jan 28, 2026
Forecast Valid:
2am EST Jan 28, 2026-6pm EST Feb 3, 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