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.

Overcast

37°F

3°C

Humidity 44%
Wind Speed NW 5 mph
Barometer 29.94 in (1013.3 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 26 Feb 10:53 pm EST
Extended Forecast for

Princeton North NJ

  • Tonight

    Tonight: Partly cloudy, with a low around 22. Calm wind.

    Low: 22 °F

    Partly Cloudy

  • Friday

    Friday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 45. Calm wind.

    High: 45 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Sunny, with a high near 52. Calm wind becoming southwest around 5 mph.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30. Calm wind becoming north around 5 mph.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of snow before 1pm. Partly sunny, with a high near 40. Chance of precipitation is 20%.

    High: 40 °F

    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Monday

    Monday: A chance of snow. Mostly cloudy, with a high near 30. Chance of precipitation is 40%.

    High: 30 °F

    Chance Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 22. Calm wind.
Friday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 45. Calm wind.
Friday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 26. Calm wind.
Saturday
Sunny, with a high near 52. Calm wind becoming southwest around 5 mph.
Saturday Night
Partly cloudy, with a low around 30. Calm wind becoming north around 5 mph.
Sunday
A slight chance of snow before 1pm. Partly sunny, with a high near 40. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 17.
Monday
A chance of snow. Mostly cloudy, with a high near 30. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Partly sunny, with a high near 39.
Tuesday Night
A chance of rain. Cloudy, with a low around 28. Chance of precipitation is 50%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 47. Chance of precipitation is 40%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Thursday
A chance of rain. Mostly cloudy, with a high near 50. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton North NJ
 40.37°N 74.64°W (Elev. 98 ft)
Last Update:
4:11 pm EST Feb 26, 2026
Forecast Valid:
11pm EST Feb 26, 2026-6pm EST Mar 5, 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