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Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Overcast

30°F

-1°C

Humidity 75%
Wind Speed NE 5 mph
Barometer 30.56 in (1034.4 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 3 Mar 4:53 am EST
Extended Forecast for

Princeton Junction NJ

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

    NOW until 11:00am Tue

    Winter Weather Advisory

  • Overnight

    Low: 26 °F

    Cloudy

  • Tuesday

    Tuesday: Rain, snow, and freezing rain, becoming all rain after 11am. Patchy fog after 7am. High near 41. Calm wind becoming east around 5 mph. Chance of precipitation is 90%. Little or no ice accumulation expected. Little or no snow accumulation expected.

    High: 41 °F

    Wintry Mix
    and Patchy
    Fog then Rain
    and Patchy
    Fog

  • Tuesday Night

    Tuesday Night: Rain, mainly before 3am. Patchy fog. Low around 37. Calm wind becoming southwest around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 37 °F

    Rain and
    Patchy Fog
    then Rain
    Likely and
    Patchy Fog

  • Wednesday

    Wednesday: A slight chance of rain after 1pm. Mostly cloudy, with a high near 55. Calm wind. Chance of precipitation is 20%.

    High: 55 °F

    Mostly Cloudy
    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 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Chance Rain
    then Rain
    Likely

  • Thursday

    Thursday: Showers likely, mainly before 7am. Cloudy, with a high near 50. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers. Low around 42. Chance of precipitation is 90%.

    Low: 42 °F

    Showers

  • Friday

    Friday: A chance of showers before 1pm. Mostly cloudy, with a high near 53. Chance of precipitation is 30%.

    High: 53 °F

    Chance
    Showers

Detailed Forecast

Overnight
Cloudy, with a low around 26. Calm wind.
Tuesday
Rain, snow, and freezing rain, becoming all rain after 11am. Patchy fog after 7am. High near 41. Calm wind becoming east around 5 mph. Chance of precipitation is 90%. Little or no ice accumulation expected. Little or no snow accumulation expected.
Tuesday Night
Rain, mainly before 3am. Patchy fog. Low around 37. Calm wind becoming southwest around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A slight chance of rain after 1pm. Mostly cloudy, with a high near 55. Calm wind. Chance of precipitation is 20%.
Wednesday Night
Rain likely, mainly after 1am. Cloudy, with a low around 39. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers likely, mainly before 7am. Cloudy, with a high near 50. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Showers. Low around 42. Chance of precipitation is 90%.
Friday
A chance of showers before 1pm. Mostly cloudy, with a high near 53. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 41.
Saturday
Mostly cloudy, with a high near 63.
Saturday Night
Showers likely. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Sunday
Mostly cloudy, with a high near 69.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Monday
Mostly cloudy, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton Junction NJ
 40.32°N 74.62°W (Elev. 85 ft)
Last Update:
4:10 am EST Mar 3, 2026
Forecast Valid:
5am EST Mar 3, 2026-6pm EDT Mar 9, 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