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.

A Few Clouds

34°F

1°C

Humidity 44%
Wind Speed W 18 G 32 mph
Barometer 29.92 in (1012.8 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 17 Mar 10:53 am EDT
Extended Forecast for

Trenton NJ

  • Today

    Today: Partly sunny, with a high near 41. Breezy, with a west wind around 20 mph, with gusts as high as 35 mph.

    High: 41 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 25. West wind around 10 mph, with gusts as high as 20 mph.

    Low: 25 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 41. Calm wind becoming southwest around 5 mph.

    High: 41 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 51. Calm wind becoming south around 5 mph in the afternoon.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of rain after 2am. Mostly cloudy, with a low around 34. Chance of precipitation is 20%.

    Low: 34 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Friday

    Friday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of rain after 2am. Mostly cloudy, with a low around 40. Chance of precipitation is 40%.

    Low: 40 °F

    Partly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: A chance of rain before 8am. Partly sunny, with a high near 57. Chance of precipitation is 30%.

    High: 57 °F

    Chance Rain
    then Partly
    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 41. Breezy, with a west wind around 20 mph, with gusts as high as 35 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 25. West wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 41. Calm wind becoming southwest around 5 mph.
Wednesday Night
Partly cloudy, with a low around 27. Calm wind.
Thursday
Mostly sunny, with a high near 51. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
A slight chance of rain after 2am. Mostly cloudy, with a low around 34. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 57.
Friday Night
A chance of rain after 2am. Mostly cloudy, with a low around 40. Chance of precipitation is 40%.
Saturday
A chance of rain before 8am. Partly sunny, with a high near 57. Chance of precipitation is 30%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 38. Chance of precipitation is 30%.
Sunday
Mostly cloudy, with a high near 58.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Trenton NJ
 40.23°N 74.78°W (Elev. 33 ft)
Last Update:
4:11 am EDT Mar 17, 2026
Forecast Valid:
11am EDT Mar 17, 2026-6pm EDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation