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

A coastal storm is expected to impact portions of the area through Sunday.

A coastal storm is expected to impact the area through Sunday. Impacts are expected to be confined mainly near the coasts of New Jersey and Delaware, where the greatest potential and impacts from minor coastal flooding and strong winds are forecast to occur. Read More >

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

10°F

-12°C

Humidity 67%
Wind Speed N 10 mph
Barometer 29.88 in (1011.5 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill-4°F (-20°C)
Last update 1 Feb 3:53 am EST
Extended Forecast for

Princeton Junction NJ

Cold Weather Advisory February 1, 04:33am until February 1, 10:00am
Click here for hazard details and duration
...
  •  
    Cold Weather Advisory February 1, 04:33am until February 1, 10:00am

    NOW until 10:00am Sun

    Cold Weather Advisory

  • Today

    High: 24 °F

    Mostly Cloudy
    and Blustery

  • Tonight

    Tonight: Partly cloudy, with a low around 10. Wind chill values as low as zero. Northwest wind 5 to 15 mph, with gusts as high as 30 mph.

    Low: 10 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 31. Wind chill values as low as -1. Northwest wind 5 to 10 mph.

    High: 31 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 7. West wind around 5 mph becoming calm.

    Low: 7 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 32. Calm wind becoming west around 5 mph in the afternoon.

    High: 32 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 8.

    Low: 8 °F

    Mostly Clear

Detailed Forecast

Today
Mostly cloudy, with a high near 24. Wind chill values as low as -7. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Partly cloudy, with a low around 10. Wind chill values as low as zero. Northwest wind 5 to 15 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 31. Wind chill values as low as -1. Northwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 7. West wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 32. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 16.
Wednesday
Partly sunny, with a high near 30.
Wednesday Night
Mostly clear, with a low around 8.
Thursday
Mostly sunny, with a high near 28.
Thursday Night
Partly cloudy, with a low around 7.
Friday
A chance of snow. Mostly cloudy, with a high near 30. Chance of precipitation is 30%.
Friday Night
A chance of snow. Mostly cloudy, with a low around 12. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 21.
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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:
8:52 pm EST Jan 31, 2026
Forecast Valid:
4am EST Feb 1, 2026-6pm EST Feb 7, 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