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.

Fair

58°F

14°C

Humidity 42%
Wind Speed Calm
Barometer 30.07 in (1017.8 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 6 Oct 6:53 pm EDT
Extended Forecast for

Princeton North NJ

  • Tonight

    Tonight: Patchy frost after 2am. Otherwise, clear, with a low around 39. West wind around 5 mph becoming calm in the evening.

    Low: 39 °F

    Clear then
    Patchy Frost

  • Wednesday

    Wednesday: Patchy frost before 9am. Otherwise, sunny, with a high near 69. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 69 °F

    Patchy Frost
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. South wind 5 to 10 mph.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76. West wind around 5 mph.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. West wind around 5 mph becoming calm.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy frost after 2am. Otherwise, clear, with a low around 39. West wind around 5 mph becoming calm in the evening.
Wednesday
Patchy frost before 9am. Otherwise, sunny, with a high near 69. Light southwest wind increasing to 5 to 10 mph in the morning.
Wednesday Night
Mostly clear, with a low around 52. South wind 5 to 10 mph.
Thursday
Sunny, with a high near 76. West wind around 5 mph.
Thursday Night
Mostly clear, with a low around 51. West wind around 5 mph becoming calm.
Friday
Sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 48.
Saturday
Sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 71. Chance of precipitation is 30%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Columbus Day
Showers likely. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 57.
Tuesday
Partly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton North NJ
 40.37°N 74.67°W (Elev. 256 ft)
Last Update:
4:09 pm EDT Oct 6, 2026
Forecast Valid:
7pm EDT Oct 6, 2026-6pm EDT Oct 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation