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.

Overcast

21°F

-6°C

Humidity 41%
Wind Speed W 10 mph
Barometer 29.97 in (1014.7 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 27 Jan 3:53 pm EST
Extended Forecast for

Princeton Junction NJ

Cold Weather Advisory January 27, 04:37pm until January 28, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 27, 04:37pm until January 28, 10:00am

    NOW until 10:00am Wed

    Cold Weather Advisory

  • This Afternoon

    High: 22 °F

    Chance
    Flurries

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 1. Wind chill values as low as -8. West wind around 5 mph.

    Low: 1 °F

    Decreasing
    Clouds

  • 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: Partly cloudy, with a low around 1. Wind chill values as low as -9. West wind around 5 mph.

    Low: 1 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 19. West wind 5 to 10 mph.

    High: 19 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around -1.

    Low: -1 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 17.

    High: 17 °F

    Sunny

  • Friday Night

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

    Low: -3 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A chance of flurries. Mostly cloudy, with a high near 22. Southwest wind around 10 mph.
Tonight
Mostly cloudy, then gradually becoming 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
Partly cloudy, with a low around 1. Wind chill values as low as -9. West wind around 5 mph.
Thursday
Sunny, with a high near 19. West wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around -1.
Friday
Sunny, with a high near 17.
Friday Night
Partly cloudy, with a low around -3.
Saturday
Partly sunny, with a high near 19.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 11. Chance of precipitation is 50%.
Sunday
A chance of snow. Mostly cloudy, with a high near 26. Chance of precipitation is 50%.
Sunday Night
Partly cloudy, with a low around 15.
Monday
Sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Mostly sunny, with a high near 31.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton Junction NJ
 40.3°N 74.62°W (Elev. 98 ft)
Last Update:
4:10 pm EST Jan 27, 2026
Forecast Valid:
4pm EST Jan 27, 2026-6pm EST Feb 3, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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