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.

Fair

61°F

16°C

Humidity 26%
Wind Speed NW 12 mph
Barometer 30.28 in (1024.8 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 11 Apr 6:53 pm EDT
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Tonight

    Tonight: Clear, with a low around 37. North wind 5 to 10 mph.

    Low: 37 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 62. Northeast wind 5 to 10 mph becoming south in the afternoon.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 49. South wind 5 to 10 mph.

    Low: 49 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 80. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 80 °F

    Partly Sunny

  • Monday Night

    Monday Night: A slight chance of showers before 2am. Mostly cloudy, with a low around 59. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 59 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 37. North wind 5 to 10 mph.
Sunday
Sunny, with a high near 62. Northeast wind 5 to 10 mph becoming south in the afternoon.
Sunday Night
Mostly cloudy, with a low around 49. South wind 5 to 10 mph.
Monday
Partly sunny, with a high near 80. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Monday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 59. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Mostly cloudy, with a low around 64.
Thursday
Partly sunny, with a high near 86.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 55.
Saturday
Partly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.27°N 74.8°W (Elev. 157 ft)
Last Update:
4:31 pm EDT Apr 11, 2026
Forecast Valid:
7pm EDT Apr 11, 2026-6pm EDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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