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

Heat Continues Across the Central and Western U.S.; Tracking Hazardous Weather Across the Northern U.S.

Early-season record warmth will persist across portions of the western and central U.S. through mid week, with high temperatures approaching 90 degrees from Texas to the Ohio Valley. Rain and mountain snow are possible across the Pacific Northwest Wednesday, with Severe Thunderstorms and wintry weather expected across the Northeast Thursday and Friday. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

40°F

4°C

Humidity 45%
Wind Speed N 12 mph
Barometer 30.44 in (1030.2 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 24 Mar 10:53 am EDT
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Today

    Today: Sunny, with a high near 50. North wind around 5 mph becoming calm in the afternoon.

    High: 50 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 33. Calm wind.

    Low: 33 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 55. Calm wind becoming south around 5 mph in the afternoon.

    High: 55 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. South wind around 5 mph.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 69. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 69 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Rain, mainly after 2am. Low around 49. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Chance Rain
    then Rain

  • Friday

    Friday: Rain, mainly before 8am. High near 59. Chance of precipitation is 80%.

    High: 59 °F

    Rain then
    Chance Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 50. North wind around 5 mph becoming calm in the afternoon.
Tonight
Increasing clouds, with a low around 33. Calm wind.
Wednesday
Mostly cloudy, with a high near 55. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 42. South wind around 5 mph.
Thursday
Partly sunny, with a high near 69. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Rain, mainly after 2am. Low around 49. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain, mainly before 8am. High near 59. Chance of precipitation is 80%.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Sunny, with a high near 45.
Saturday Night
Mostly clear, with a low around 28.
Sunday
Sunny, with a high near 53.
Sunday Night
Mostly cloudy, with a low around 37.
Monday
Partly sunny, with a high near 60.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.28°N 74.83°W (Elev. 200 ft)
Last Update:
4:08 am EDT Mar 24, 2026
Forecast Valid:
11am EDT Mar 24, 2026-6pm EDT Mar 30, 2026
 
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