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

63°F

17°C

Humidity 27%
Wind Speed NW 12 mph
Barometer 30.25 in (1023.8 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 11 Apr 4:53 pm EDT
Extended Forecast for

Monmouth Junction NJ

  • Tonight

    Tonight: Clear, with a low around 36. North wind 5 to 10 mph.

    Low: 36 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 62. Northeast wind 5 to 10 mph becoming south in the afternoon.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 47. South wind around 5 mph.

    Low: 47 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 82. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 82 °F

    Partly Sunny

  • Monday Night

    Monday Night: A slight chance of showers before 2am. Mostly cloudy, with a low around 59. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 59 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 36. North wind 5 to 10 mph.
Sunday
Sunny, with a high near 62. Northeast wind 5 to 10 mph becoming south in the afternoon.
Sunday Night
Mostly cloudy, with a low around 47. South wind around 5 mph.
Monday
Partly sunny, with a high near 82. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 59. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Mostly cloudy, with a low around 66.
Thursday
Partly sunny, with a high near 88.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 55.
Saturday
Partly sunny, with a high near 77.
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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:
4:31 pm EDT Apr 11, 2026
Forecast Valid:
5pm EDT Apr 11, 2026-6pm EDT Apr 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