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.

Fog/Mist

45°F

7°C

Humidity 90%
Wind Speed E 14 mph
Barometer 30.35 in (1027.2 mb)
Dewpoint 42°F (6°C)
Visibility 4.00 mi
Wind Chill39°F (4°C)
Last update 2 Apr 7:53 am EDT
Extended Forecast for

Trenton NJ

  • Today

    Today: Cloudy, with a high near 48. East wind 10 to 15 mph.

    High: 48 °F

    Cloudy

  • Tonight

    Tonight: A slight chance of showers between 11pm and 1am. Cloudy, with a low around 41. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 41 °F

    Slight Chance
    Showers

  • Friday

    Friday: Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 74. East wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 74 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 61. Southwest wind around 5 mph.

    Low: 61 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Chance of precipitation is 30%.

    High: 79 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.

    Low: 54 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers, mainly after 8am. High near 71. Chance of precipitation is 90%.

    High: 71 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely before 8pm. Partly cloudy, with a low around 40. Chance of precipitation is 60%.

    Low: 40 °F

    Showers
    Likely then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

Today
Cloudy, with a high near 48. East wind 10 to 15 mph.
Tonight
A slight chance of showers between 11pm and 1am. Cloudy, with a low around 41. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday
Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 74. East wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 61. Southwest wind around 5 mph.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
Sunday
Showers, mainly after 8am. High near 71. Chance of precipitation is 90%.
Sunday Night
Showers likely before 8pm. Partly cloudy, with a low around 40. Chance of precipitation is 60%.
Monday
Sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 55.
Tuesday Night
Mostly clear, with a low around 31.
Wednesday
Sunny, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton NJ
 40.22°N 74.75°W (Elev. 23 ft)
Last Update:
4:11 am EDT Apr 2, 2026
Forecast Valid:
8am EDT Apr 2, 2026-6pm EDT Apr 8, 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