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

86°F

30°C

Humidity 43%
Wind Speed W 16 G 29 mph
Barometer 29.85 in (1010.1 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 15 Apr 2:53 pm EDT
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Tonight

    Tonight: A slight chance of showers between 8pm and midnight. Increasing clouds, with a low around 66. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 89. Southwest wind 5 to 15 mph.

    High: 89 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 65. Southwest wind around 5 mph.

    Low: 65 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, mainly after 2pm. Partly sunny, with a high near 81. West wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 81 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 8pm. Partly cloudy, with a low around 57. North wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 57 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.

    Low: 53 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 65. Chance of precipitation is 50%.

    High: 65 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 2am. Mostly cloudy, with a low around 39. Chance of precipitation is 40%.

    Low: 39 °F

    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers between 8pm and midnight. Increasing clouds, with a low around 66. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday
Partly sunny, with a high near 89. Southwest wind 5 to 15 mph.
Thursday Night
Mostly cloudy, with a low around 65. Southwest wind around 5 mph.
Friday
A chance of showers, mainly after 2pm. Partly sunny, with a high near 81. West wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of showers before 8pm. Partly cloudy, with a low around 57. North wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
A chance of showers after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Sunday
A chance of showers. Mostly cloudy, with a high near 65. Chance of precipitation is 50%.
Sunday Night
A chance of showers before 2am. Mostly cloudy, with a low around 39. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
Mostly sunny, with a high near 70.
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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:
4:09 am EDT Apr 15, 2026
Forecast Valid:
3pm EDT Apr 15, 2026-6pm EDT Apr 22, 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