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

33°F

1°C

Humidity 45%
Wind Speed W 3 mph
Barometer 30.15 in (1020.7 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 13 Feb 5:53 pm EST
Extended Forecast for

Monmouth Junction NJ

  • Tonight

    Tonight: Isolated snow showers after 1am. Increasing clouds, with a low around 19. West wind around 5 mph. Chance of precipitation is 20%.

    Low: 19 °F

    Mostly Clear
    then Isolated
    Snow Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 43. Southwest wind 5 to 10 mph becoming northwest in the afternoon.

    High: 43 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 21. Calm wind.

    Low: 21 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 40. Calm wind becoming east around 5 mph.

    High: 40 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of snow, mainly before 1am. Mostly cloudy, with a low around 27. Calm wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Chance Snow

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Tuesday Night

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

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Isolated snow showers after 1am. Increasing clouds, with a low around 19. West wind around 5 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 43. Southwest wind 5 to 10 mph becoming northwest in the afternoon.
Saturday Night
Increasing clouds, with a low around 21. Calm wind.
Sunday
Mostly cloudy, with a high near 40. Calm wind becoming east around 5 mph.
Sunday Night
A chance of snow, mainly before 1am. Mostly cloudy, with a low around 27. Calm wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Washington's Birthday
Partly sunny, with a high near 43.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
A chance of rain. Cloudy, with a high near 48. Chance of precipitation is 50%.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 37. Chance of precipitation is 60%.
Thursday
A chance of rain. Mostly cloudy, with a high near 49. Chance of precipitation is 30%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Friday
A chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 50%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monmouth Junction NJ
 40.38°N 74.55°W (Elev. 98 ft)
Last Update:
4:15 pm EST Feb 13, 2026
Forecast Valid:
6pm EST Feb 13, 2026-6pm EST Feb 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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