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.

Partly Cloudy

27°F

-3°C

Humidity 51%
Wind Speed S 6 mph
Barometer 30.03 in (1016.5 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 16 Jan 6:53 pm EST
Extended Forecast for

Trenton NJ

  • Tonight

    Tonight: A chance of snow, mainly after 3am. Increasing clouds, with a low around 28. South wind around 5 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 28 °F

    Partly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow likely, mixing with rain after 1pm, then gradually ending. Mostly cloudy, with a high near 40. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Saturday Night

    Saturday Night: A chance of snow after 1am. Increasing clouds, with a low around 29. Calm wind. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow likely, mainly between 10am and 1pm. Cloudy, with a high near 35. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 35 °F

    Snow Likely

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 19. West wind around 5 mph.

    Low: 19 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 34.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 11.

    Low: 11 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 22.

    High: 22 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 9.

    Low: 9 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of snow, mainly after 3am. Increasing clouds, with a low around 28. South wind around 5 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Saturday
Snow likely, mixing with rain after 1pm, then gradually ending. Mostly cloudy, with a high near 40. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Saturday Night
A chance of snow after 1am. Increasing clouds, with a low around 29. Calm wind. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
Snow likely, mainly between 10am and 1pm. Cloudy, with a high near 35. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Sunday Night
Partly cloudy, with a low around 19. West wind around 5 mph.
M.L.King Day
Sunny, with a high near 34.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Sunny, with a high near 22.
Tuesday Night
Mostly clear, with a low around 9.
Wednesday
Mostly sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Mostly cloudy, with a high near 40.
Thursday Night
Partly cloudy, with a low around 20.
Friday
A chance of snow. Partly sunny, with a high near 32. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton NJ
 40.23°N 74.78°W (Elev. 33 ft)
Last Update:
4:12 pm EST Jan 16, 2026
Forecast Valid:
7pm EST Jan 16, 2026-6pm EST Jan 23, 2026
 
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Additional Resources

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Chance of Precipitation