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

43°F

6°C

Humidity 47%
Wind Speed S 5 mph
Barometer 29.85 in (1010.4 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 26 Feb 4:53 pm EST
Extended Forecast for

2 Miles SSE Princeton Junction NJ

  • This Afternoon

    This Afternoon: A slight chance of snow. Mostly cloudy, with a steady temperature around 38. Calm wind. Chance of precipitation is 20%.

    High: 38 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 45. Calm wind.

    High: 45 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, sunny, with a high near 51. Calm wind becoming southwest around 5 mph.

    High: 51 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of snow. Mostly cloudy, with a high near 30. Chance of precipitation is 40%.

    High: 30 °F

    Chance Snow

Detailed Forecast

This Afternoon
A slight chance of snow. Mostly cloudy, with a steady temperature around 38. Calm wind. Chance of precipitation is 20%.
Tonight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 21. Calm wind.
Friday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 45. Calm wind.
Friday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 26. Calm wind.
Saturday
Patchy fog before 10am. Otherwise, sunny, with a high near 51. Calm wind becoming southwest around 5 mph.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Partly sunny, with a high near 41.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
A chance of snow. Mostly cloudy, with a high near 30. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Partly sunny, with a high near 39.
Tuesday Night
A chance of rain or freezing rain. Cloudy, with a low around 28. Chance of precipitation is 50%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 47. Chance of precipitation is 40%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Thursday
A chance of rain. Mostly cloudy, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Princeton Junction NJ
 40.29°N 74.6°W (Elev. 98 ft)
Last Update:
4:11 pm EST Feb 26, 2026
Forecast Valid:
5pm EST Feb 26, 2026-6pm EST Mar 5, 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