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.

Partly Cloudy

38°F

3°C

Humidity 73%
Wind Speed W 12 G 23 mph
Barometer 29.48 in (997.9 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 11 Dec 2:53 am EST
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Overnight

    Overnight: Partly cloudy, with a low around 27. West wind around 15 mph, with gusts as high as 30 mph.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 35. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 35 °F

    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 23. West wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 23 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 36. West wind 5 to 10 mph.

    High: 36 °F

    Mostly Sunny

  • Friday Night

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

    Low: 21 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 39.

    High: 39 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Snow likely, mainly after 1am. Cloudy, with a low around 24. Chance of precipitation is 70%.

    Low: 24 °F

    Chance Snow
    then Snow
    Likely

  • Sunday

    Sunday: A chance of snow before 1pm. Mostly cloudy, with a high near 30. Chance of precipitation is 50%.

    High: 30 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 16.

    Low: 16 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 27. West wind around 15 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 35. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Thursday Night
Mostly clear, with a low around 23. West wind 10 to 15 mph, with gusts as high as 30 mph.
Friday
Mostly sunny, with a high near 36. West wind 5 to 10 mph.
Friday Night
Partly cloudy, with a low around 21. Calm wind.
Saturday
Mostly cloudy, with a high near 39.
Saturday Night
Snow likely, mainly after 1am. Cloudy, with a low around 24. Chance of precipitation is 70%.
Sunday
A chance of snow before 1pm. Mostly cloudy, with a high near 30. Chance of precipitation is 50%.
Sunday Night
Mostly clear, with a low around 16.
Monday
Mostly sunny, with a high near 29.
Monday Night
Mostly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 33.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.28°N 74.83°W (Elev. 200 ft)
Last Update:
2:10 am EST Dec 11, 2025
Forecast Valid:
3am EST Dec 11, 2025-6pm EST Dec 17, 2025
 
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