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.

Mostly Cloudy

40°F

4°C

Humidity 58%
Wind Speed S 6 mph
Barometer 29.66 in (1004.0 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 25 Feb 5:53 pm EST
Extended Forecast for

2 Miles SSE Princeton Junction NJ

  • Tonight

    Tonight: Partly cloudy, with a low around 29. Southwest wind around 5 mph becoming west after midnight.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of rain and snow before 1pm, then a chance of snow. Mostly cloudy, with a high near 40. Southwest wind around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 40 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19. Calm wind.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43. Calm wind becoming south around 5 mph.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26. Southeast wind around 5 mph becoming calm.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 29. Southwest wind around 5 mph becoming west after midnight.
Thursday
A slight chance of rain and snow before 1pm, then a chance of snow. Mostly cloudy, with a high near 40. Southwest wind around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday Night
Partly cloudy, with a low around 19. Calm wind.
Friday
Mostly sunny, with a high near 43. Calm wind becoming south around 5 mph.
Friday Night
Partly cloudy, with a low around 26. Southeast wind around 5 mph becoming calm.
Saturday
Mostly sunny, with a high near 51.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
Mostly cloudy, with a high near 41.
Sunday Night
Mostly cloudy, with a low around 18.
Monday
A chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 40%.
Monday Night
A chance of snow. Mostly cloudy, with a low around 12. Chance of precipitation is 30%.
Tuesday
A chance of rain and snow. Cloudy, with a high near 37. Chance of precipitation is 40%.
Tuesday Night
Snow and freezing rain likely. Cloudy, with a low around 25. Chance of precipitation is 60%.
Wednesday
A chance of rain. Mostly sunny, with a high near 43. Chance of precipitation is 40%.
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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:
5:10 pm EST Feb 25, 2026
Forecast Valid:
6pm EST Feb 25, 2026-6pm EST Mar 4, 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