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

34°F

1°C

Humidity 79%
Wind Speed Calm
Barometer 29.77 in (1007.7 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 26 Feb 2:53 am EST
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Overnight

    Overnight: Mostly clear, with a low around 29. West wind around 5 mph.

    Low: 29 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of rain and snow before 1pm, then a chance of snow. Mostly cloudy, with a high near 40. West wind 5 to 10 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 40 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 22. South wind around 5 mph becoming calm.

    Low: 22 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 42. Northeast wind around 5 mph becoming south in the afternoon.

    High: 42 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28. South wind around 5 mph.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 29. West wind around 5 mph.
Thursday
A slight chance of rain and snow before 1pm, then a chance of snow. Mostly cloudy, with a high near 40. West wind 5 to 10 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday Night
Partly cloudy, with a low around 22. South wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 42. Northeast wind around 5 mph becoming south in the afternoon.
Friday Night
Partly cloudy, with a low around 28. South wind around 5 mph.
Saturday
Mostly sunny, with a high near 50.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
Mostly cloudy, with a high near 40.
Sunday Night
Mostly cloudy, with a low around 19.
Monday
A chance of snow. Mostly cloudy, with a high near 27. Chance of precipitation is 50%.
Monday Night
A chance of snow. Mostly cloudy, with a low around 15. Chance of precipitation is 30%.
Tuesday
A chance of rain and snow. Cloudy, with a high near 36. Chance of precipitation is 40%.
Tuesday Night
Rain or freezing rain likely. Cloudy, with a low around 27. Chance of precipitation is 60%.
Wednesday
A chance of rain. Mostly sunny, with a high near 43. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.27°N 74.8°W (Elev. 157 ft)
Last Update:
5:10 pm EST Feb 25, 2026
Forecast Valid:
3am 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