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

37°F

3°C

Humidity 100%
Wind Speed S 3 mph
Barometer 30.26 in (1024.2 mb)
Dewpoint 37°F (3°C)
Visibility 1.00 mi
Last update 7 Mar 7:53 am EST
Extended Forecast for

Trenton NJ

  • Today

    Today: Patchy fog before 10am. Otherwise, cloudy, with a high near 50. Calm wind becoming south around 5 mph in the afternoon.

    High: 50 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: Showers likely, mainly after 1am. Mostly cloudy, with a temperature rising to around 57 by 5am. South wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F⇑

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers before 1pm. Mostly cloudy, with a high near 68. West wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. West wind around 5 mph becoming calm in the evening.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 69. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers. Cloudy, with a high near 76. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    Showers

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, cloudy, with a high near 50. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Showers likely, mainly after 1am. Mostly cloudy, with a temperature rising to around 57 by 5am. South wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of showers before 1pm. Mostly cloudy, with a high near 68. West wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Partly cloudy, with a low around 40. West wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 69. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 47.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Mostly cloudy, with a low around 53.
Wednesday
A chance of showers. Cloudy, with a high near 76. Chance of precipitation is 40%.
Wednesday Night
Showers likely, mainly after 1am. Cloudy, with a low around 51. Chance of precipitation is 70%.
Thursday
A chance of showers. Cloudy, with a high near 62. Breezy. Chance of precipitation is 50%.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Mostly cloudy, with a high near 48.
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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:
4:09 am EST Mar 7, 2026
Forecast Valid:
8am EST Mar 7, 2026-6pm EDT Mar 13, 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