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

25°F

-4°C

Humidity 46%
Wind Speed W 9 mph
Barometer 30.10 in (1018.9 mb)
Dewpoint 7°F (-14°C)
Visibility NA
Wind Chill16°F (-9°C)
Last update 19 Jan 10:53 pm EST
Extended Forecast for

Trenton NJ

Cold Weather Advisory January 20, 02:00am until January 20, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 13. West wind around 10 mph, with gusts as high as 20 mph.

    Low: 13 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 22. Wind chill values as low as zero. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 22 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 6. West wind around 5 mph becoming calm in the evening.

    Low: 6 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34. Light south wind increasing to 5 to 10 mph in the afternoon.

    High: 34 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28. Southwest wind around 5 mph.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 12.

    Low: 12 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 13. West wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 22. Wind chill values as low as zero. West wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 6. West wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 34. Light south wind increasing to 5 to 10 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 28. Southwest wind around 5 mph.
Thursday
Mostly sunny, with a high near 44.
Thursday Night
Partly cloudy, with a low around 22.
Friday
Partly sunny, with a high near 33.
Friday Night
Mostly cloudy, with a low around 12.
Saturday
A chance of snow after 1pm. Mostly cloudy, with a high near 18. Chance of precipitation is 30%.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 8. Chance of precipitation is 40%.
Sunday
A chance of snow. Partly sunny, with a high near 19. Chance of precipitation is 40%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 6. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 21.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Trenton NJ
 40.22°N 74.75°W (Elev. 23 ft)
Last Update:
4:10 pm EST Jan 19, 2026
Forecast Valid:
11pm EST Jan 19, 2026-6pm EST Jan 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation