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.

Overcast

26°F

-3°C

Humidity 60%
Wind Speed W 5 mph
Barometer 30.14 in (1020.2 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 14 Feb 1:53 am EST
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Overnight

    Overnight: Isolated snow showers. Mostly cloudy, with a low around 19. Southwest wind around 5 mph. Chance of precipitation is 20%.

    Low: 19 °F

    Isolated Snow
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 42. Southwest wind 5 to 10 mph becoming northwest in the afternoon.

    High: 42 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 40. Calm wind becoming east around 5 mph.

    High: 40 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of snow, mainly before 1am. Mostly cloudy, with a low around 28. Calm wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance Snow

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Isolated snow showers. Mostly cloudy, with a low around 19. Southwest wind around 5 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 42. Southwest wind 5 to 10 mph becoming northwest in the afternoon.
Saturday Night
Partly cloudy, with a low around 21. Calm wind.
Sunday
Mostly cloudy, with a high near 40. Calm wind becoming east around 5 mph.
Sunday Night
A chance of snow, mainly before 1am. Mostly cloudy, with a low around 28. Calm wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Washington's Birthday
Partly sunny, with a high near 43.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
A chance of rain. Mostly cloudy, with a high near 48. Chance of precipitation is 50%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 37. Chance of precipitation is 60%.
Thursday
A chance of rain. Mostly cloudy, with a high near 49. Chance of precipitation is 30%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Friday
A chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 50%.
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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:
4:15 pm EST Feb 13, 2026
Forecast Valid:
2am EST Feb 14, 2026-6pm EST Feb 20, 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