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

52°F

11°C

Humidity 57%
Wind Speed W 5 mph
Barometer 29.95 in (1013.4 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 10 Nov 11:53 pm EST
Extended Forecast for

Princeton NJ

  • Overnight

    Overnight: Clear, with a low around 38. West wind around 5 mph.

    Low: 38 °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: A chance of rain after 4am. Increasing clouds, with a low around 43. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain, mainly after 7am. High near 61. East wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 61 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely. Mostly cloudy, with a low around 38. Northwest wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Rain Likely

  • Friday

    Friday: Rain likely. Cloudy, with a high near 48. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 48 °F

    Rain Likely

  • Friday Night

    Friday Night: A chance of rain. 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

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 38. West wind around 5 mph.
Veterans Day
Increasing clouds, with a high near 63. West wind around 5 mph becoming calm.
Wednesday Night
A chance of rain after 4am. Increasing clouds, with a low around 43. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain, mainly after 7am. High near 61. East wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain likely. Mostly cloudy, with a low around 38. Northwest wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain likely. Cloudy, with a high near 48. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A chance of rain. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 48.
Saturday Night
Mostly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 50.
Sunday Night
Partly cloudy, with a low around 30.
Monday
Mostly sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton NJ
 40.35°N 74.67°W (Elev. 190 ft)
Last Update:
4:07 pm EST Nov 10, 2026
Forecast Valid:
12am EST Nov 11, 2026-6pm EST Nov 17, 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