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

62°F

17°C

Humidity 67%
Wind Speed N 16 G 25 mph
Barometer 30.00 in (1015.2 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 8 Oct 11:53 am EDT
Extended Forecast for

Princeton North NJ

  • This Afternoon

    This Afternoon: A slight chance of showers before 1pm. Partly sunny, with a high near 70. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 70 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Clear, with a low around 43. North wind 5 to 10 mph.

    Low: 43 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 62. North wind around 5 mph.

    High: 62 °F

    Sunny

  • Thursday Night

    Thursday Night: Areas of frost after 4am. Otherwise, clear, with a low around 37. Calm wind.

    Low: 37 °F

    Clear then
    Areas Frost

  • Friday

    Friday: Areas of frost before 8am. Otherwise, sunny, with a high near 66. Calm wind.

    High: 66 °F

    Areas Frost
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.

    Low: 50 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 30%.

    High: 64 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of showers before 1pm. Partly sunny, with a high near 70. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
Clear, with a low around 43. North wind 5 to 10 mph.
Thursday
Sunny, with a high near 62. North wind around 5 mph.
Thursday Night
Areas of frost after 4am. Otherwise, clear, with a low around 37. Calm wind.
Friday
Areas of frost before 8am. Otherwise, sunny, with a high near 66. Calm wind.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Partly sunny, with a high near 69.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 48. Chance of precipitation is 40%.
Columbus Day
A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 68.
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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 EDT Oct 8, 2025
Forecast Valid:
12pm EDT Oct 8, 2025-6pm EDT Oct 14, 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