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

27°F

-3°C

Humidity 55%
Wind Speed N 9 G 22 mph
Barometer 30.08 in (1018.3 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 12 Feb 10:53 pm EST
Extended Forecast for

Monmouth Junction NJ

  • Tonight

    Tonight: Mostly cloudy, with a low around 16. Northwest wind around 5 mph.

    Low: 16 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 35. Northwest wind around 5 mph.

    High: 35 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of snow showers after 1am. Partly cloudy, with a low around 19. Calm wind becoming west around 5 mph. Chance of precipitation is 20%.

    Low: 19 °F

    Mostly Clear
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: Sunny, with a high near 42. West wind around 5 mph.

    High: 42 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of rain and snow after 1pm. Mostly cloudy, with a high near 39. Chance of precipitation is 20%.

    High: 39 °F

    Partly Sunny
    then Slight
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A chance of snow. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.

    Low: 29 °F

    Chance Snow

  • Washington's Birthday

    Washington's Birthday: Mostly cloudy, with a high near 43.

    High: 43 °F

    Mostly Cloudy

  • Monday Night

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

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 16. Northwest wind around 5 mph.
Friday
Sunny, with a high near 35. Northwest wind around 5 mph.
Friday Night
A slight chance of snow showers after 1am. Partly cloudy, with a low around 19. Calm wind becoming west around 5 mph. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 42. West wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 21. Calm wind.
Sunday
A slight chance of rain and snow after 1pm. Mostly cloudy, with a high near 39. Chance of precipitation is 20%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Washington's Birthday
Mostly cloudy, with a high near 43.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 47.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
A chance of rain. Cloudy, with a high near 51. Chance of precipitation is 50%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 38. Chance of precipitation is 50%.
Thursday
A chance of rain. Partly sunny, with a high near 51. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Monmouth Junction NJ
 40.38°N 74.55°W (Elev. 98 ft)
Last Update:
4:19 pm EST Feb 12, 2026
Forecast Valid:
11pm EST Feb 12, 2026-6pm EST Feb 19, 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