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

27°F

-3°C

Humidity 75%
Wind Speed S 6 mph
Barometer 29.74 in (1006.5 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 25 Feb 3:53 am EST
Extended Forecast for

Princeton Junction NJ

  • Overnight

    Overnight: Snow likely, mainly after 5am. Cloudy, with a steady temperature around 26. South wind around 5 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 26 °F

    Snow Likely

  • Wednesday

    Wednesday: Rain and snow likely before noon, then a slight chance of rain between noon and 1pm. Cloudy through mid morning, then gradual clearing, with a high near 43. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Rain/Snow
    Likely then
    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: 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. Partly sunny, with a high near 40. Northwest wind around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 40 °F

    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A slight chance of snow before 1am. Partly cloudy, with a low around 21. Calm wind. Chance of precipitation is 20%.

    Low: 21 °F

    Slight Chance
    Snow

  • Friday

    Friday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow likely, mainly after 5am. Cloudy, with a steady temperature around 26. South wind around 5 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Wednesday
Rain and snow likely before noon, then a slight chance of rain between noon and 1pm. Cloudy through mid morning, then gradual clearing, with a high near 43. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
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. Partly sunny, with a high near 40. Northwest wind around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday Night
A slight chance of snow before 1am. Partly cloudy, with a low around 21. Calm wind. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 42.
Friday Night
Partly cloudy, with a low around 25.
Saturday
Mostly sunny, with a high near 50.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Partly sunny, with a high near 42.
Sunday Night
Mostly cloudy, with a low around 20.
Monday
A chance of snow. Mostly cloudy, with a high near 30. Chance of precipitation is 50%.
Monday Night
A chance of snow. Mostly cloudy, with a low around 17. Chance of precipitation is 40%.
Tuesday
A chance of rain and snow. Partly sunny, with a high near 35. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton Junction NJ
 40.3°N 74.62°W (Elev. 98 ft)
Last Update:
4:13 am EST Feb 25, 2026
Forecast Valid:
4am EST Feb 25, 2026-6pm EST Mar 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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