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.

Light Snow Fog/Mist

34°F

1°C

Humidity 92%
Wind Speed W 7 mph
Barometer 29.89 in (1011.6 mb)
Dewpoint 32°F (0°C)
Visibility 5.00 mi
Wind Chill28°F (-2°C)
Last update 12 Mar 5:53 pm EDT
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Tonight

    Tonight: A slight chance of rain and snow before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 28. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 28 °F

    Slight Chance
    Rain/Snow
    then Clear

  • Friday

    Friday: Increasing clouds, with a high near 49. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 49 °F

    Sunny then
    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 52. West wind around 15 mph, with gusts as high as 30 mph.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 33. West wind around 5 mph becoming calm.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 54.

    High: 54 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 45. Chance of precipitation is 90%.

    Low: 45 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain. High near 65. Chance of precipitation is 100%.

    High: 65 °F

    Rain

  • Monday Night

    Monday Night: Rain likely, mainly before 2am. Mostly cloudy, with a low around 32. Chance of precipitation is 70%.

    Low: 32 °F

    Rain Likely

Detailed Forecast

Tonight
A slight chance of rain and snow before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 28. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday
Increasing clouds, with a high near 49. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Partly cloudy, with a low around 38. South wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 52. West wind around 15 mph, with gusts as high as 30 mph.
Saturday Night
Mostly cloudy, with a low around 33. West wind around 5 mph becoming calm.
Sunday
Mostly cloudy, with a high near 54.
Sunday Night
Rain, mainly after 2am. Low around 45. Chance of precipitation is 90%.
Monday
Rain. High near 65. Chance of precipitation is 100%.
Monday Night
Rain likely, mainly before 2am. Mostly cloudy, with a low around 32. Chance of precipitation is 70%.
Tuesday
A chance of rain before 8am. Mostly sunny, with a high near 41. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Sunny, with a high near 39.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.28°N 74.83°W (Elev. 200 ft)
Last Update:
4:11 pm EDT Mar 12, 2026
Forecast Valid:
6pm EDT Mar 12, 2026-6pm EDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation