National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Trenton, Mercer County Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

47°F

8°C

Humidity 42%
Wind Speed Calm
Barometer 30.21 in (1022.3 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 17 Apr 11:53 pm EDT
Extended Forecast for

Princeton Junction NJ

Frost Advisory until April 18, 08:00am
Click here for hazard details and duration
Frost Advisory
  •  
    Frost Advisory until April 18, 08:00am

    NOW until 8:00am Fri

    Frost Advisory

  • Overnight

    Low: 35 °F

    Areas Frost

  • Friday

    Friday: Areas of frost before 8am. Otherwise, sunny, with a high near 71. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 71 °F

    Areas Frost
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53. South wind around 10 mph.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 83. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 83 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Saturday Night

    Saturday Night: A slight chance of showers before 2am. Mostly cloudy, with a low around 58. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 58 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, with a high near 69.

    High: 69 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 63.

    High: 63 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Areas of frost after 2am. Otherwise, clear, with a low around 35. Calm wind.
Friday
Areas of frost before 8am. Otherwise, sunny, with a high near 71. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Partly cloudy, with a low around 53. South wind around 10 mph.
Saturday
Mostly cloudy, with a high near 83. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 58. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday
Mostly cloudy, with a high near 69.
Sunday Night
Mostly cloudy, with a low around 45.
Monday
Mostly cloudy, with a high near 63.
Monday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Tuesday
A chance of showers before 2pm. Partly sunny, with a high near 72. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Partly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton Junction NJ
 40.32°N 74.62°W (Elev. 85 ft)
Last Update:
12:35 am EDT Apr 18, 2025
Forecast Valid:
12am EDT Apr 18, 2025-6pm EDT Apr 24, 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