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

62°F

17°C

Humidity 90%
Wind Speed SW 5 mph
Barometer 29.93 in (1012.8 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 15 Apr 5:53 am EDT
Extended Forecast for

Trenton NJ

  • Today

    Today: Sunny, with a high near 91. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers between 9pm and 10pm. Partly cloudy, with a low around 67. Southwest wind around 5 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 91. Southwest wind 5 to 10 mph.

    High: 91 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 66. Southwest wind around 5 mph.

    Low: 66 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, mainly after 2pm. Partly sunny, with a high near 83. West wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 83 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 8pm. Partly cloudy, with a low around 57. 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 77.

    High: 77 °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

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.

    High: 69 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 91. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.
Tonight
A slight chance of showers between 9pm and 10pm. Partly cloudy, with a low around 67. Southwest wind around 5 mph. Chance of precipitation is 20%.
Thursday
Partly sunny, with a high near 91. Southwest wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 66. Southwest wind around 5 mph.
Friday
A chance of showers, mainly after 2pm. Partly sunny, with a high near 83. 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. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
A chance of showers after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
Sunday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 53.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton NJ
 40.22°N 74.75°W (Elev. 23 ft)
Last Update:
4:09 am EDT Apr 15, 2026
Forecast Valid:
6am EDT Apr 15, 2026-6pm EDT Apr 21, 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