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.

Fair

32°F

0°C

Humidity 69%
Wind Speed N 14 mph
Barometer 30.00 in (1015.6 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 18 Mar 3:53 am EDT
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Today

    Today: Sunny, with a high near 62. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 62 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 37. Southwest wind around 5 mph becoming calm.

    Low: 37 °F

    Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67. Southeast wind 5 to 10 mph.

    High: 67 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 40. Southeast wind around 5 mph.

    Low: 40 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: A chance of rain after 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 65. Southeast wind 5 to 15 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 65 °F

    Patchy Fog
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain, mainly between 8pm and 2am. Low around 35. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 35 °F

    Rain

  • Friday

    Friday: Mostly sunny, with a high near 49. Breezy.

    High: 49 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 62. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 37. Southwest wind around 5 mph becoming calm.
Wednesday
Mostly sunny, with a high near 67. Southeast wind 5 to 10 mph.
Wednesday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 40. Southeast wind around 5 mph.
Thursday
A chance of rain after 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 65. Southeast wind 5 to 15 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain, mainly between 8pm and 2am. Low around 35. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
Mostly sunny, with a high near 49. Breezy.
Friday Night
Mostly clear, with a low around 35.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 56.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Rain likely. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.28°N 74.83°W (Elev. 200 ft)
Last Update:
4:13 am EDT Mar 18, 2025
Forecast Valid:
4am EDT Mar 18, 2025-6pm EDT Mar 24, 2025
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation