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

54°F

12°C

Humidity 77%
Wind Speed NW 17 G 28 mph
Barometer 29.64 in (1002.9 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 12 Mar 7:53 am EDT
Extended Forecast for

Trenton NJ

  • Today

    Today: Rain before 5pm, then rain and snow likely. Temperature falling to around 35 by 5pm. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than a half inch possible.

    High: 57 °F⇓

    Breezy. Rain
    then
    Rain/Snow

  • Tonight

    Tonight: A chance of rain and snow before 7pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Northwest wind 5 to 10 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Chance
    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Increasing clouds, with a high near 50. Light southwest wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 50 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 39. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53. West wind around 10 mph, with gusts as high as 25 mph.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 54.

    High: 54 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 46. Chance of precipitation is 80%.

    Low: 46 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain. High near 66. Chance of precipitation is 90%.

    High: 66 °F

    Rain

Detailed Forecast

Today
Rain before 5pm, then rain and snow likely. Temperature falling to around 35 by 5pm. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A chance of rain and snow before 7pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Northwest wind 5 to 10 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Friday
Increasing clouds, with a high near 50. Light southwest wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Friday Night
Mostly clear, with a low around 39. South wind around 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 53. West wind around 10 mph, with gusts as high as 25 mph.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
Cloudy, with a high near 54.
Sunday Night
Rain, mainly after 2am. Low around 46. Chance of precipitation is 80%.
Monday
Rain. High near 66. Chance of precipitation is 90%.
Monday Night
Rain likely before 2am, then a chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 60%.
Tuesday
A chance of rain and snow. Mostly sunny, with a high near 41. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 24.
Wednesday
Sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Trenton NJ
 40.23°N 74.78°W (Elev. 33 ft)
Last Update:
6:09 am EDT Mar 12, 2026
Forecast Valid:
8am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation