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

60°F

16°C

Humidity 46%
Wind Speed W 13 G 24 mph
Barometer 29.93 in (1012.8 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 10 Nov 11:53 am EST
Extended Forecast for

Princeton NJ

  • This Afternoon

    This Afternoon: Sunny, with a high near 64. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 64 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 39. West wind around 5 mph becoming calm after midnight.

    Low: 39 °F

    Clear

  • Veterans Day

    Veterans Day: Increasing clouds, with a high near 63. West wind around 5 mph becoming calm.

    High: 63 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain. High near 61. East wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Rain Likely
    then Rain

  • Thursday Night

    Thursday Night: Rain. Low around 36. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 36 °F

    Rain

  • Friday

    Friday: Rain likely, mainly before 1pm. Mostly cloudy, with a high near 49. Chance of precipitation is 60%.

    High: 49 °F

    Rain Likely

  • Friday Night

    Friday Night: A chance of rain before 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 64. West wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Clear, with a low around 39. West wind around 5 mph becoming calm after midnight.
Veterans Day
Increasing clouds, with a high near 63. West wind around 5 mph becoming calm.
Wednesday Night
Mostly cloudy, with a low around 42. Calm wind.
Thursday
Rain. High near 61. East wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain. Low around 36. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain likely, mainly before 1pm. Mostly cloudy, with a high near 49. Chance of precipitation is 60%.
Friday Night
A chance of rain before 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 30.
Monday
Mostly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton NJ
 40.34°N 74.64°W (Elev. 98 ft)
Last Update:
8:20 am EST Nov 10, 2026
Forecast Valid:
12pm EST Nov 10, 2026-6pm EST Nov 16, 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