Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Mostly Cloudy

59°F

15°C

Humidity 90%
Wind Speed Calm
Barometer 29.92 in (1012.7 mb)
Dewpoint 56°F (13°C)
Visibility 9.00 mi
Last update 10 May 10:53 am EDT
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Today

    Today: A chance of showers and thunderstorms, mainly between 4pm and 5pm.  Mostly sunny, with a high near 78. West wind 5 to 10 mph.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 48. Northwest wind around 5 mph becoming calm.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of showers before 9am.  Cloudy, then gradually becoming mostly sunny, with a high near 65. Calm wind becoming west around 5 mph in the afternoon.  Chance of precipitation is 20%.

    High: 65 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43. North wind around 5 mph.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 68. North wind around 5 mph.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers.  Mostly cloudy, with a high near 68. Chance of precipitation is 40%.

    High: 68 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm.  Low around 51. Chance of precipitation is 90%.

    Low: 51 °F

    Showers

  • Thursday

    Thursday: Showers likely.  Mostly cloudy, with a high near 68. Chance of precipitation is 70%.

    High: 68 °F

    Showers
    Likely

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly sunny, with a high near 78. West wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. Northwest wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A slight chance of showers before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 65. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 43. North wind around 5 mph.
Tuesday
Sunny, with a high near 68. North wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
A chance of showers. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 51. Chance of precipitation is 90%.
Thursday
Showers likely. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.28°N 74.83°W (Elev. 200 ft)
8:06 am EDT May 10, 2026
11am EDT May 10, 2026-6pm EDT May 16, 2026
 
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Additional Resources

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