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

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

A coastal storm is expected to impact the area Saturday night through Sunday. Impacts are expected to be confined mainly near the coasts of New Jersey and Delaware, where the highest light snowfall accumulations will occur. Minor coastal flooding and strong winds are also forecast along the Atlantic coast. Read More >

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

7°F

-14°C

Humidity 52%
Wind Speed W 6 mph
Barometer 30.20 in (1022.6 mb)
Dewpoint -7°F (-22°C)
Visibility 10.00 mi
Wind Chill-4°F (-20°C)
Last update 31 Jan 2:53 am EST
Extended Forecast for

2 Miles SSE Princeton Junction NJ

Cold Weather Advisory January 31, 03:40am until February 1, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 31, 03:40am until February 1, 10:00am

    NOW until 10:00am Sun

    Cold Weather Advisory

  • Overnight

    Low: -4 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 20. Wind chill values as low as -10. North wind around 5 mph.

    High: 20 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A slight chance of snow after 1am. Mostly cloudy, with a low around 9. Wind chill values as low as -7. North wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 9 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 25. Wind chill values as low as -8. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 25 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Blustery

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 10. Northwest wind 5 to 15 mph.

    Low: 10 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

  • Monday Night

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

    Low: 8 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 32.

    High: 32 °F

    Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around -4. West wind around 5 mph.
Saturday
Increasing clouds, with a high near 20. Wind chill values as low as -10. North wind around 5 mph.
Saturday Night
A slight chance of snow after 1am. Mostly cloudy, with a low around 9. Wind chill values as low as -7. North wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Sunday
Mostly cloudy, with a high near 25. Wind chill values as low as -8. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 10. Northwest wind 5 to 15 mph.
Monday
Sunny, with a high near 31.
Monday Night
Mostly clear, with a low around 8.
Tuesday
Sunny, with a high near 32.
Tuesday Night
Mostly cloudy, with a low around 14.
Wednesday
A chance of snow after 1pm. Partly sunny, with a high near 31. Chance of precipitation is 30%.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 15. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 28.
Thursday Night
Partly cloudy, with a low around 5.
Friday
Partly sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Princeton Junction NJ
 40.29°N 74.6°W (Elev. 98 ft)
Last Update:
9:51 pm EST Jan 30, 2026
Forecast Valid:
3am EST Jan 31, 2026-6pm EST Feb 6, 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