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.

Overcast

41°F

5°C

Humidity 89%
Wind Speed E 7 mph
Barometer 30.36 in (1027.5 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 6 Mar 2:53 pm EST
Extended Forecast for

Trenton NJ

  • This Afternoon

    This Afternoon: Cloudy, with a high near 47. Northeast wind around 10 mph.

    High: 47 °F

    Cloudy

  • Tonight

    Tonight: A chance of rain, mainly between 2am and 4am. Patchy fog after 8pm. Otherwise, cloudy, with a low around 39. East wind 5 to 10 mph becoming light northeast after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Chance Rain
    and Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 1pm. Otherwise, cloudy, with a high near 57. East wind around 5 mph becoming southwest in the afternoon.

    High: 57 °F

    Patchy Fog

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Patchy fog before 10pm. Otherwise, mostly cloudy, with a low around 51. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: A slight chance of showers. Partly sunny, with a high near 66. West wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 66 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Cloudy, with a high near 47. Northeast wind around 10 mph.
Tonight
A chance of rain, mainly between 2am and 4am. Patchy fog after 8pm. Otherwise, cloudy, with a low around 39. East wind 5 to 10 mph becoming light northeast after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Patchy fog before 1pm. Otherwise, cloudy, with a high near 57. East wind around 5 mph becoming southwest in the afternoon.
Saturday Night
Showers likely and possibly a thunderstorm. Patchy fog before 10pm. Otherwise, mostly cloudy, with a low around 51. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of showers. Partly sunny, with a high near 66. West wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
A chance of showers after 1am. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 70. Chance of precipitation is 40%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Thursday
A chance of showers. Partly sunny, with a high near 56. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 44.
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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:
6:16 am EST Mar 6, 2026
Forecast Valid:
3pm EST Mar 6, 2026-6pm EDT Mar 13, 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