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.

Fair

28°F

-2°C

Humidity 63%
Wind Speed Calm
Barometer 30.00 in (1015.3 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 27 Feb 3:53 am EST
Extended Forecast for

2 Miles SSE Princeton Junction NJ

  • Today

    Today: Sunny, with a high near 45. Calm wind becoming south around 5 mph.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 24. Southeast wind around 5 mph becoming calm.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 53. Calm wind becoming southwest around 5 mph.

    High: 53 °F

    Becoming
    Sunny

  • Saturday Night

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

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of rain and snow before 1pm. Partly sunny, with a high near 41. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Chance
    Rain/Snow

  • Sunday Night

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

    Low: 16 °F

    Partly Cloudy

  • Monday

    Monday: A chance of snow after 1pm. Mostly cloudy, with a high near 30. Chance of precipitation is 30%.

    High: 30 °F

    Mostly Cloudy
    then Chance
    Snow

  • Monday Night

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

    Low: 18 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 40%.

    High: 41 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
Sunny, with a high near 45. Calm wind becoming south around 5 mph.
Tonight
Partly cloudy, with a low around 24. Southeast wind around 5 mph becoming calm.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 53. Calm wind becoming southwest around 5 mph.
Saturday Night
Partly cloudy, with a low around 30. Calm wind.
Sunday
A chance of rain and snow before 1pm. Partly sunny, with a high near 41. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Sunday Night
Partly cloudy, with a low around 16.
Monday
A chance of snow after 1pm. Mostly cloudy, with a high near 30. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 40%.
Tuesday Night
Rain likely. Cloudy, with a low around 32. Chance of precipitation is 70%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 48. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 32.
Thursday
A chance of rain. Cloudy, with a high near 53. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Princeton Junction NJ
 40.29°N 74.6°W (Elev. 98 ft)
Last Update:
4:09 am EST Feb 27, 2026
Forecast Valid:
4am EST Feb 27, 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