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

47°F

8°C

Humidity 42%
Wind Speed NW 7 mph
Barometer 30.05 in (1017.2 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 14 Feb 3:53 pm EST
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Tonight

    Tonight: Increasing clouds, with a low around 25. West wind around 5 mph becoming calm.

    Low: 25 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A slight chance of rain after 4pm, mixing with snow after 5pm. Mostly cloudy, with a high near 40. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 40 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Snow, mainly before 1am. Low around 29. Northeast wind 5 to 10 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 29 °F

    Snow

  • Washington's Birthday

    Washington's Birthday: Cloudy, then gradually becoming mostly sunny, with a high near 40. Northeast wind 5 to 10 mph.

    High: 40 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain after 1pm. Mostly cloudy, with a high near 46. Chance of precipitation is 30%.

    High: 46 °F

    Cloudy then
    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 1am. Mostly cloudy, with a low around 38. Chance of precipitation is 40%.

    Low: 38 °F

    Chance Rain

Detailed Forecast

Tonight
Increasing clouds, with a low around 25. West wind around 5 mph becoming calm.
Sunday
A slight chance of rain after 4pm, mixing with snow after 5pm. Mostly cloudy, with a high near 40. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
Snow, mainly before 1am. Low around 29. Northeast wind 5 to 10 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Washington's Birthday
Cloudy, then gradually becoming mostly sunny, with a high near 40. Northeast wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 29. Calm wind.
Tuesday
Partly sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
A chance of rain after 1pm. Mostly cloudy, with a high near 46. Chance of precipitation is 30%.
Wednesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 38. Chance of precipitation is 40%.
Thursday
A chance of rain. Partly sunny, with a high near 53. Chance of precipitation is 30%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.
Friday
A chance of rain. Mostly cloudy, with a high near 47. Chance of precipitation is 50%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.
Saturday
A chance of rain. Partly sunny, with a high near 44. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.27°N 74.8°W (Elev. 157 ft)
Last Update:
4:17 pm EST Feb 14, 2026
Forecast Valid:
4pm EST Feb 14, 2026-6pm EST Feb 21, 2026
 
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Additional Resources

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Chance of Precipitation