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

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Overcast

31°F

-1°C

Humidity 38%
Wind Speed S 7 mph
Barometer 30.61 in (1036.0 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 2 Mar 3:53 pm EST
Extended Forecast for

Princeton Junction NJ

Winter Weather Advisory March 3, 05:00am until March 3, 11:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Increasing clouds, with a low around 27. Southeast wind around 5 mph becoming calm in the evening.

    Low: 27 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Rain and snow likely before 10am, then rain. High near 41. East wind around 5 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow
    then Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 38. East wind around 5 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 7am. Mostly cloudy, with a high near 55. West wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Rain Likely
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 1am. Cloudy, with a low around 39. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Chance Rain
    then Rain
    Likely

  • Thursday

    Thursday: A chance of rain, mainly before 1pm. Cloudy, with a high near 55. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly after 1am. Cloudy, with a low around 42. Chance of precipitation is 70%.

    Low: 42 °F

    Rain Likely

  • Friday

    Friday: A chance of rain before 1pm. Mostly cloudy, with a high near 59. Chance of precipitation is 30%.

    High: 59 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 27. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
Rain and snow likely before 10am, then rain. High near 41. East wind around 5 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday Night
Rain. Low around 38. East wind around 5 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain likely, mainly before 7am. Mostly cloudy, with a high near 55. West wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain likely, mainly after 1am. Cloudy, with a low around 39. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of rain, mainly before 1pm. Cloudy, with a high near 55. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain likely, mainly after 1am. Cloudy, with a low around 42. Chance of precipitation is 70%.
Friday
A chance of rain before 1pm. Mostly cloudy, with a high near 59. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 41.
Saturday
Partly sunny, with a high near 63.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 53. Chance of precipitation is 50%.
Sunday
A chance of rain. Mostly cloudy, with a high near 71. Chance of precipitation is 30%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Monday
A chance of rain. Mostly cloudy, with a high near 69. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton Junction NJ
 40.32°N 74.62°W (Elev. 85 ft)
Last Update:
1:24 pm EST Mar 2, 2026
Forecast Valid:
4pm EST Mar 2, 2026-6pm EDT Mar 9, 2026
 
Forecast Discussion
 
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Additional Resources

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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