Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

42°F

6°C

Humidity 51%
Wind Speed W 8 mph
Barometer 30.06 in (1017.4 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 6 Apr 7:53 am EDT
Extended Forecast for

Princeton Junction NJ

  • Today

    Today: Sunny, with a high near 58. West wind 5 to 15 mph.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers before 9pm.  Partly cloudy, with a low around 38. West wind around 5 mph.  Chance of precipitation is 20%.

    Low: 38 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 52. West wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 52 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 28. North wind around 5 mph.

    Low: 28 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 51. Calm wind becoming east around 5 mph in the afternoon.

    High: 51 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 58. West wind 5 to 15 mph.
Tonight
A slight chance of showers before 9pm. Partly cloudy, with a low around 38. West wind around 5 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 52. West wind 10 to 15 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 28. North wind around 5 mph.
Wednesday
Sunny, with a high near 51. Calm wind becoming east around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 30.
Thursday
Mostly sunny, with a high near 59.
Thursday Night
Partly cloudy, with a low around 38.
Friday
Mostly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton Junction NJ
 40.32°N 74.62°W (Elev. 85 ft)
4:10 am EDT Apr 6, 2026
8am EDT Apr 6, 2026-6pm EDT Apr 12, 2026
 
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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