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

34°F

1°C

Humidity 38%
Wind Speed S 10 mph
Barometer 30.39 in (1028.7 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 18 Mar 2:53 pm EDT
Extended Forecast for

Princeton North NJ

  • Tonight

    Tonight: Partly cloudy, with a low around 26. South wind around 5 mph becoming calm in the evening.

    Low: 26 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 48. Calm wind becoming south around 5 mph in the afternoon.

    High: 48 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 57. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 57 °F

    Partly Sunny

  • Friday Night

    Friday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 42. South wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Rain Likely

  • Saturday

    Saturday: Rain likely, mainly before 8am. Partly sunny, with a high near 61. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Rain Likely
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain after 2pm. Mostly cloudy, with a high near 66. Chance of precipitation is 30%.

    High: 66 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday Night

    Sunday Night: A chance of rain. Mostly cloudy, with a low around 41. Chance of precipitation is 40%.

    Low: 41 °F

    Chance Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 26. South wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 48. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 33. Calm wind.
Friday
Partly sunny, with a high near 57. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 42. South wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain likely, mainly before 8am. Partly sunny, with a high near 61. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly cloudy, with a low around 42.
Sunday
A chance of rain after 2pm. Mostly cloudy, with a high near 66. Chance of precipitation is 30%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 41. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 53.
Monday Night
Mostly clear, with a low around 28.
Tuesday
Mostly sunny, with a high near 47.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 53. 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:
1:08 pm EDT Mar 18, 2026
Forecast Valid:
3pm EDT Mar 18, 2026-6pm EDT Mar 25, 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