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

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

24°F

-4°C

Humidity 62%
Wind Speed Calm
Barometer 29.95 in (1013.9 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Last update 24 Feb 7:53 pm EST
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Tonight

    Tonight: Snow, mainly after 2am. Low around 21. Southwest wind 5 to 10 mph becoming south after midnight. Chance of precipitation is 80%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 21 °F

    Partly Cloudy
    then Snow

  • Wednesday

    Wednesday: Snow, mainly before 8am. High near 44. Southwest wind 10 to 15 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 44 °F

    Snow then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. Southwest wind 5 to 10 mph becoming west after midnight.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of rain and snow before 10am, then a chance of snow. Mostly cloudy, with a high near 40. Northwest wind around 10 mph. Chance of precipitation is 40%. New snow accumulation of less than one inch possible.

    High: 40 °F

    Slight Chance
    Rain/Snow
    then Chance
    Snow

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 26. West wind around 5 mph becoming northeast after midnight. Chance of precipitation is 40%. New snow accumulation of less than one inch possible.

    Low: 26 °F

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
Snow, mainly after 2am. Low around 21. Southwest wind 5 to 10 mph becoming south after midnight. Chance of precipitation is 80%. Total nighttime snow accumulation of less than a half inch possible.
Wednesday
Snow, mainly before 8am. High near 44. Southwest wind 10 to 15 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 29. Southwest wind 5 to 10 mph becoming west after midnight.
Thursday
A slight chance of rain and snow before 10am, then a chance of snow. Mostly cloudy, with a high near 40. Northwest wind around 10 mph. Chance of precipitation is 40%. New snow accumulation of less than one inch possible.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 26. West wind around 5 mph becoming northeast after midnight. Chance of precipitation is 40%. New snow accumulation of less than one inch possible.
Friday
Partly sunny, with a high near 41.
Friday Night
Mostly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 49.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly cloudy, with a high near 42.
Sunday Night
Mostly cloudy, with a low around 21.
Monday
A chance of snow. Mostly cloudy, with a high near 31. Chance of precipitation is 40%.
Monday Night
A chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.27°N 74.8°W (Elev. 157 ft)
Last Update:
4:31 pm EST Feb 24, 2026
Forecast Valid:
8pm EST Feb 24, 2026-6pm EST Mar 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation