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 and Breezy

75°F

24°C

Humidity 39%
Wind Speed S 21 G 33 mph
Barometer 29.77 in (1007.4 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 26 Mar 4:53 pm EDT
Extended Forecast for

Princeton North NJ

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Low around 52. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers

  • Friday

    Friday: Rain likely, mainly before 11am. Mostly cloudy, with a temperature falling to around 50 by 11am. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F⇓

    Rain Likely
    then Chance
    Rain

  • Friday Night

    Friday Night: A slight chance of rain, mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 29. North wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 29 °F

    Slight Chance
    Rain/Snow

  • Saturday

    Saturday: Sunny, with a high near 44. Northwest wind 10 to 15 mph.

    High: 44 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of rain after 2am. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Low around 52. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Rain likely, mainly before 11am. Mostly cloudy, with a temperature falling to around 50 by 11am. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A slight chance of rain, mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 29. North wind 5 to 10 mph. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 44. Northwest wind 10 to 15 mph.
Saturday Night
Mostly clear, with a low around 26. Calm wind.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 63.
Monday Night
A chance of rain after 2am. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
Tuesday
A chance of rain. Partly sunny, with a high near 66. Chance of precipitation is 30%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 51. Chance of precipitation is 40%.
Wednesday
A chance of rain. Partly sunny, with a high near 75. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 51. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 72.
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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:
4:10 pm EDT Mar 26, 2026
Forecast Valid:
5pm EDT Mar 26, 2026-6pm EDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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