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

Trenton, Mercer County Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Overcast

43°F

6°C

Humidity 93%
Wind Speed SE 5 mph
Barometer 30.12 in (1019.5 mb)
Dewpoint 41°F (5°C)
Visibility 7.00 mi
Wind Chill40°F (4°C)
Last update 15 Mar 10:53 am EDT
Extended Forecast for

Princeton NJSimilar City Names

  • Today

    Today: Cloudy, with a high near 57. Southeast wind around 5 mph.

    High: 57 °F

    Cloudy

  • Tonight

    Tonight: Patchy drizzle with a chance of light rain between midnight and 2am, then a slight chance of light rain after 2am. Patchy fog between 4am and 5am. Otherwise, cloudy, with a low around 49. Southeast wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Patchy Fog
    then Chance
    Light Rain
    and Patchy
    Fog

  • Sunday

    Sunday: A chance of sprinkles before 8am, then showers likely after 2pm. Cloudy, with a high near 70. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Cloudy then
    Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 53. Breezy, with a south wind 15 to 20 mph becoming southwest 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 53 °F

    Showers and
    Breezy

  • Monday

    Monday: A chance of showers, mainly before 11am. Cloudy, with a high near 59. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 59 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

Detailed Forecast

Today
Cloudy, with a high near 57. Southeast wind around 5 mph.
Tonight
Patchy drizzle with a chance of light rain between midnight and 2am, then a slight chance of light rain after 2am. Patchy fog between 4am and 5am. Otherwise, cloudy, with a low around 49. Southeast wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of sprinkles before 8am, then showers likely after 2pm. Cloudy, with a high near 70. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 53. Breezy, with a south wind 15 to 20 mph becoming southwest 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Monday
A chance of showers, mainly before 11am. Cloudy, with a high near 59. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Mostly sunny, with a high near 70.
Wednesday Night
Mostly cloudy, with a low around 46.
Thursday
A chance of rain. Mostly cloudy, with a high near 65. Chance of precipitation is 40%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 36. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 49. Breezy.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Princeton NJSimilar City Names
 40.35°N 74.67°W (Elev. 190 ft)
Last Update:
10:13 am EDT Mar 15, 2025
Forecast Valid:
11am EDT Mar 15, 2025-6pm EDT Mar 21, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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