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

75°F

24°C

Humidity 76%
Wind Speed SW 6 mph
Barometer 29.89 in (1011.6 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 14 Oct 12:53 pm EDT
Extended Forecast for

Trenton NJ

  • This Afternoon

    This Afternoon: A slight chance of showers between 2pm and 3pm. Partly sunny, with a high near 83. West wind around 10 mph. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 54. North wind 5 to 10 mph.

    Low: 54 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 68. North wind 5 to 10 mph becoming east in the afternoon.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely after 2am. Increasing clouds, with a low around 53. Southeast wind around 5 mph becoming calm. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Partly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers, with thunderstorms also possible after 5pm. High near 78. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers
    Likely then
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 43. Breezy. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Showers then
    Chance
    Showers and
    Breezy

  • Saturday

    Saturday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy frost. Otherwise, mostly clear, with a low around 36.

    Low: 36 °F

    Patchy Frost

  • Sunday

    Sunday: Patchy frost before 9am. Otherwise, sunny, with a high near 61.

    High: 61 °F

    Patchy Frost
    then Sunny

Detailed Forecast

This Afternoon
A slight chance of showers between 2pm and 3pm. Partly sunny, with a high near 83. West wind around 10 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 54. North wind 5 to 10 mph.
Thursday
Sunny, with a high near 68. North wind 5 to 10 mph becoming east in the afternoon.
Thursday Night
Showers likely after 2am. Increasing clouds, with a low around 53. Southeast wind around 5 mph becoming calm. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers, with thunderstorms also possible after 5pm. High near 78. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 43. Breezy. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 54.
Saturday Night
Patchy frost. Otherwise, mostly clear, with a low around 36.
Sunday
Patchy frost before 9am. Otherwise, sunny, with a high near 61.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 66.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
Partly sunny, with a high near 68.
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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 Oct 14, 2026
Forecast Valid:
1pm EDT Oct 14, 2026-6pm EDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation