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

45°F

7°C

Humidity 40%
Wind Speed S 6 mph
Barometer 30.09 in (1018.4 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 27 Feb 4:53 pm EST
Extended Forecast for

Trenton NJ

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 52. Calm wind becoming southwest around 5 mph.

    High: 52 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31. Calm wind becoming northeast around 5 mph.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow showers, mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 43. East wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 43 °F

    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 18. North wind 5 to 10 mph.

    Low: 18 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of snow after 1pm. Mostly cloudy, with a high near 32. Chance of precipitation is 20%.

    High: 32 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Monday Night

    Monday Night: A chance of snow after 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.

    Low: 18 °F

    Mostly Cloudy
    then Chance
    Snow

  • Tuesday

    Tuesday: A chance of rain and snow before 1pm, then rain likely. Cloudy, with a high near 41. Chance of precipitation is 60%.

    High: 41 °F

    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: Rain. Low around 36. Chance of precipitation is 80%.

    Low: 36 °F

    Rain

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 26. Calm wind.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 52. Calm wind becoming southwest around 5 mph.
Saturday Night
Mostly cloudy, with a low around 31. Calm wind becoming northeast around 5 mph.
Sunday
A chance of snow showers, mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 43. East wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Sunday Night
Mostly cloudy, with a low around 18. North wind 5 to 10 mph.
Monday
A slight chance of snow after 1pm. Mostly cloudy, with a high near 32. Chance of precipitation is 20%.
Monday Night
A chance of snow after 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Tuesday
A chance of rain and snow before 1pm, then rain likely. Cloudy, with a high near 41. Chance of precipitation is 60%.
Tuesday Night
Rain. Low around 36. Chance of precipitation is 80%.
Wednesday
A chance of rain before 1pm. Cloudy, with a high near 50. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Cloudy, with a low around 36. Chance of precipitation is 30%.
Thursday
A chance of rain. Cloudy, with a high near 55. Chance of precipitation is 40%.
Thursday Night
A chance of rain. Cloudy, with a low around 41. Chance of precipitation is 50%.
Friday
A chance of rain. Cloudy, with a high near 53. Chance of precipitation is 40%.
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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:
4:10 pm EST Feb 27, 2026
Forecast Valid:
4pm EST Feb 27, 2026-6pm EST Mar 6, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation