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.

Fair

43°F

6°C

Humidity 40%
Wind Speed Calm
Barometer 29.89 in (1011.8 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 26 Feb 11:53 am EST
Extended Forecast for

Trenton, Mercer County Airport NJ

  • This Afternoon

    This Afternoon: A chance of snow, mainly between 2pm and 4pm. Mostly cloudy, with a high near 41. Northwest wind around 5 mph becoming southeast. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 41 °F

    Chance Snow

  • Tonight

    Tonight: Partly cloudy, with a low around 21. Northeast wind around 5 mph becoming calm.

    Low: 21 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 45. Calm wind becoming south around 5 mph.

    High: 45 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52. Calm wind becoming southwest around 5 mph.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

  • Monday

    Monday: A chance of snow. Mostly cloudy, with a high near 28. Chance of precipitation is 50%.

    High: 28 °F

    Chance Snow

Detailed Forecast

This Afternoon
A chance of snow, mainly between 2pm and 4pm. Mostly cloudy, with a high near 41. Northwest wind around 5 mph becoming southeast. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tonight
Partly cloudy, with a low around 21. Northeast wind around 5 mph becoming calm.
Friday
Sunny, with a high near 45. Calm wind becoming south around 5 mph.
Friday Night
Mostly clear, with a low around 26. Calm wind.
Saturday
Sunny, with a high near 52. Calm wind becoming southwest around 5 mph.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Partly sunny, with a high near 41.
Sunday Night
Partly cloudy, with a low around 16.
Monday
A chance of snow. Mostly cloudy, with a high near 28. Chance of precipitation is 50%.
Monday Night
A chance of snow. Mostly cloudy, with a low around 16. Chance of precipitation is 30%.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 40%.
Tuesday Night
Snow likely. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.
Wednesday
A chance of rain. Partly sunny, with a high near 44. Chance of precipitation is 30%.
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Forecast Area
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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:
4:12 am EST Feb 26, 2026
Forecast Valid:
12pm EST Feb 26, 2026-6pm EST Mar 4, 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