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

32°F

0°C

Humidity 85%
Wind Speed N 7 mph
Barometer 30.14 in (1020.3 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 16 Feb 10:53 am EST
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 39. Northeast wind 5 to 10 mph.

    High: 39 °F

    Partly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 28. Calm wind becoming southwest around 5 mph after midnight.

    Low: 28 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 46. West wind around 5 mph.

    High: 46 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly after 1pm. Cloudy, with a high near 47. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A chance of rain before 1am. Mostly cloudy, with a low around 39. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Chance Rain

  • Thursday

    Thursday: Mostly cloudy, with a high near 47.

    High: 47 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A chance of rain after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: Rain likely. Cloudy, with a high near 42. Chance of precipitation is 70%.

    High: 42 °F

    Rain Likely

Detailed Forecast

Washington's Birthday
Partly sunny, with a high near 39. Northeast wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 28. Calm wind becoming southwest around 5 mph after midnight.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 46. West wind around 5 mph.
Tuesday Night
Mostly cloudy, with a low around 34. Calm wind.
Wednesday
Rain likely, mainly after 1pm. Cloudy, with a high near 47. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 39. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly cloudy, with a high near 47.
Thursday Night
A chance of rain after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.
Friday
Rain likely. Cloudy, with a high near 42. Chance of precipitation is 70%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 33. Chance of precipitation is 40%.
Saturday
A chance of rain. Mostly cloudy, with a high near 44. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.27°N 74.8°W (Elev. 157 ft)
Last Update:
4:14 am EST Feb 16, 2026
Forecast Valid:
10am EST Feb 16, 2026-6pm EST Feb 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation