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.

Mostly Cloudy

30°F

-1°C

Humidity 47%
Wind Speed W 10 G 21 mph
Barometer 29.80 in (1008.6 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 31 Dec 2:53 pm EST
Extended Forecast for

Trenton NJ

  • Tonight

    Tonight: A chance of snow showers before 3am, then a chance of snow showers after 4am. Increasing clouds, with a low around 24. Southwest wind 5 to 10 mph. Chance of precipitation is 50%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 24 °F

    Chance Snow
    Showers

  • New Year's Day

    New Year's Day: A chance of snow showers before 7am. Mostly sunny, with a high near 31. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 31 °F

    Chance Snow
    Showers then
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 16. West wind around 5 mph.

    Low: 16 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 34. West wind 5 to 10 mph.

    High: 34 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 21. West wind around 5 mph.

    Low: 21 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of snow showers before 3am, then a chance of snow showers after 4am. Increasing clouds, with a low around 24. Southwest wind 5 to 10 mph. Chance of precipitation is 50%. Total nighttime snow accumulation of less than a half inch possible.
New Year's Day
A chance of snow showers before 7am. Mostly sunny, with a high near 31. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Thursday Night
Partly cloudy, with a low around 16. West wind around 5 mph.
Friday
Partly sunny, with a high near 34. West wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 21. West wind around 5 mph.
Saturday
Partly sunny, with a high near 35.
Saturday Night
Mostly cloudy, with a low around 20.
Sunday
Mostly sunny, with a high near 35.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 38.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 41.
Tuesday Night
Partly cloudy, with a low around 26.
Wednesday
Mostly sunny, with a high near 38.
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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:
6:43 am EST Dec 31, 2025
Forecast Valid:
3pm EST Dec 31, 2025-6pm EST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation