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.

Fog

32°F

0°C

Humidity 100%
Wind Speed Calm
Barometer 29.77 in (1007.7 mb)
Dewpoint 32°F (0°C)
Visibility 0.25 mi
Last update 28 Dec 11:53 pm EST
Extended Forecast for

Trenton NJ

Wind Advisory December 29, 10:00am until December 30, 01:00pm
Dense Fog Advisory until December 29, 10:00am
Click here for hazard details and duration
Wind Advisory
Dense Fog Advisory
  •  
    Dense Fog Advisory until December 29, 10:00am

    NOW until 10:00am Mon

    Dense Fog Advisory

  • Overnight

    Low: 32 °F

    Chance Rain
    and Fog

  • Monday

    Monday: Showers, mainly before 2pm. Widespread fog, mainly before 8am. High near 54. Breezy, with a southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Showers and
    Fog

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. Breezy, with a west wind around 20 mph, with gusts as high as 45 mph.

    Low: 26 °F

    Partly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 34. Breezy, with a west wind around 20 mph, with gusts as high as 45 mph.

    High: 34 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 24. West wind 5 to 10 mph.

    Low: 24 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

Detailed Forecast

Overnight
A chance of rain. Widespread fog after 5am. Otherwise, cloudy, with a low around 32. Southwest wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers, mainly before 2pm. Widespread fog, mainly before 8am. High near 54. Breezy, with a southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Partly cloudy, with a low around 26. Breezy, with a west wind around 20 mph, with gusts as high as 45 mph.
Tuesday
Partly sunny, with a high near 34. Breezy, with a west wind around 20 mph, with gusts as high as 45 mph.
Tuesday Night
Mostly cloudy, with a low around 24. West wind 5 to 10 mph.
Wednesday
Partly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 23.
New Year's Day
Partly sunny, with a high near 32.
Thursday Night
Partly cloudy, with a low around 18.
Friday
Mostly sunny, with a high near 32.
Friday Night
Partly cloudy, with a low around 20.
Saturday
Partly sunny, with a high near 37.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
Partly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Trenton NJ
 40.23°N 74.78°W (Elev. 33 ft)
Last Update:
9:48 pm EST Dec 28, 2025
Forecast Valid:
12am EST Dec 29, 2025-6pm EST Jan 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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