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.

Fog/Mist

28°F

-2°C

Humidity 88%
Wind Speed NW 5 mph
Barometer 29.94 in (1013.4 mb)
Dewpoint 25°F (-4°C)
Visibility 6.00 mi
Wind Chill22°F (-6°C)
Last update 6 Dec 7:53 am EST
Extended Forecast for

Princeton North NJ

  • Today

    Today: Mostly cloudy, with a high near 42. Calm wind becoming west around 5 mph.

    High: 42 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly clear, with a low around 23. Calm wind.

    Low: 23 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, with a high near 41. Calm wind becoming west around 5 mph.

    High: 41 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24. Light and variable wind becoming northwest 5 to 10 mph after midnight.

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 32. North wind 5 to 10 mph, with gusts as high as 25 mph.

    High: 32 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain after 1pm. Cloudy, with a high near 45. Chance of precipitation is 30%.

    High: 45 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Today
Mostly cloudy, with a high near 42. Calm wind becoming west around 5 mph.
Tonight
Mostly clear, with a low around 23. Calm wind.
Sunday
Mostly cloudy, with a high near 41. Calm wind becoming west around 5 mph.
Sunday Night
Mostly cloudy, with a low around 24. Light and variable wind becoming northwest 5 to 10 mph after midnight.
Monday
Mostly sunny, with a high near 32. North wind 5 to 10 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 14.
Tuesday
Partly sunny, with a high near 35.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
A chance of rain after 1pm. Cloudy, with a high near 45. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 33. Chance of precipitation is 50%.
Thursday
A chance of rain. Partly sunny, with a high near 42. Chance of precipitation is 30%.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.
Friday
A chance of snow. Partly sunny, with a high near 37. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton North NJ
 40.37°N 74.64°W (Elev. 98 ft)
Last Update:
4:09 am EST Dec 6, 2025
Forecast Valid:
8am EST Dec 6, 2025-6pm EST Dec 12, 2025
 
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