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

87°F

31°C

Humidity 37%
Wind Speed S 15 G 29 mph
Barometer 29.74 in (1006.2 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 16 Apr 5:53 pm EDT
Extended Forecast for

Trenton NJ

  • Tonight

    Tonight: A slight chance of showers before 11pm, then a slight chance of showers after 3am. Mostly cloudy, with a low around 67. Southwest wind around 5 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    Showers

  • Friday

    Friday: A chance of showers, mainly between 2pm and 5pm. Mostly sunny, with a high near 82. Northwest wind around 5 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55. Calm wind becoming east around 5 mph.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 73. Southeast wind 5 to 10 mph.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 53. Southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Sunday

    Sunday: Showers and thunderstorms. High near 61. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 61 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before 8pm. Partly cloudy, with a low around 38. Chance of precipitation is 60%.

    Low: 38 °F

    Showers
    Likely then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Monday Night

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

    Low: 31 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers before 11pm, then a slight chance of showers after 3am. Mostly cloudy, with a low around 67. Southwest wind around 5 mph becoming northwest after midnight. Chance of precipitation is 20%.
Friday
A chance of showers, mainly between 2pm and 5pm. Mostly sunny, with a high near 82. Northwest wind around 5 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 55. Calm wind becoming east around 5 mph.
Saturday
Mostly sunny, with a high near 73. Southeast wind 5 to 10 mph.
Saturday Night
A slight chance of showers, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 53. Southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms. High near 61. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers likely, mainly before 8pm. Partly cloudy, with a low around 38. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 31.
Tuesday
Sunny, with a high near 59.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Partly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
Sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton NJ
 40.23°N 74.78°W (Elev. 33 ft)
Last Update:
4:10 pm EDT Apr 16, 2026
Forecast Valid:
6pm EDT Apr 16, 2026-6pm EDT Apr 23, 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