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

Showers and Thunderstorms in the Southwest and Ohio Valley; Mountain Snow in the Northeast

Showers and thunderstorms, along with high-elevation snow, will begin to develop over parts of the Southwest late tonight and is expected to continue through Wednesday morning. Mountain snow over parts the Northeast will continue through Tuesday. A few strong to severe storms and heavy rainfall are possible across portions of the Lower Ohio Valley Tuesday. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Mostly Cloudy

38°F

3°C

Humidity 55%
Wind Speed SW 5 mph
Barometer 30.04 in (1016.7 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 17 Nov 11:53 pm EST
Extended Forecast for

Princeton NJ

  • Overnight

    Overnight: Mostly clear, with a low around 30. West wind around 5 mph.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 47. West wind 5 to 10 mph.

    High: 47 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 1am. Cloudy, with a low around 34. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Rain Likely

  • Wednesday

    Wednesday: Partly sunny, with a high near 50. Calm wind becoming northeast around 5 mph.

    High: 50 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Mostly Cloudy

  • Thursday

    Thursday: Cloudy, with a high near 49.

    High: 49 °F

    Cloudy

  • Thursday Night

    Thursday Night: A chance of rain. Cloudy, with a low around 42. Chance of precipitation is 40%.

    Low: 42 °F

    Chance Rain

  • Friday

    Friday: A chance of rain. Mostly cloudy, with a high near 59. Chance of precipitation is 50%.

    High: 59 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.

    Low: 45 °F

    Rain Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 30. West wind around 5 mph.
Tuesday
Increasing clouds, with a high near 47. West wind 5 to 10 mph.
Tuesday Night
Rain likely, mainly before 1am. Cloudy, with a low around 34. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Partly sunny, with a high near 50. Calm wind becoming northeast around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 34. Calm wind.
Thursday
Cloudy, with a high near 49.
Thursday Night
A chance of rain. Cloudy, with a low around 42. Chance of precipitation is 40%.
Friday
A chance of rain. Mostly cloudy, with a high near 59. Chance of precipitation is 50%.
Friday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Saturday
A chance of rain before 1pm. Partly sunny, with a high near 53. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton NJ
 40.35°N 74.67°W (Elev. 190 ft)
Last Update:
4:09 pm EST Nov 17, 2025
Forecast Valid:
12am EST Nov 18, 2025-6pm EST Nov 24, 2025
 
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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