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

53°F

12°C

Humidity 69%
Wind Speed NW 6 mph
Barometer 29.90 in (1011.8 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 2 May 9:53 am EDT
Extended Forecast for

Princeton North NJ

  • Today

    Today: Mostly cloudy, with a high near 62. Northwest wind 5 to 10 mph.

    High: 62 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 39. Northwest wind around 5 mph.

    Low: 39 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 61. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. Southwest wind around 5 mph.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 73. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers after 8am. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.

    High: 75 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly cloudy, with a high near 62. Northwest wind 5 to 10 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 39. Northwest wind around 5 mph.
Sunday
Sunny, with a high near 61. West wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 43. Southwest wind around 5 mph.
Monday
Sunny, with a high near 73. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Mostly cloudy, with a low around 61.
Wednesday
A chance of showers after 8am. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.
Wednesday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Thursday
Showers. High near 69. Chance of precipitation is 80%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 63.
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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:
4:08 am EDT May 2, 2026
Forecast Valid:
10am EDT May 2, 2026-6pm EDT May 8, 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