National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

31°F

-1°C

Humidity 61%
Wind Speed NW 7 mph
Barometer 29.80 in (1008.7 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 23 Feb 10:53 pm EST
Extended Forecast for

Monmouth Junction NJ

  • Tonight

    Tonight: Mostly cloudy, with a low around 19. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 19 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 29 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely after 1am. Increasing clouds, with a low around 17. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 17 °F

    Partly Cloudy
    then Snow
    Likely

  • Wednesday

    Wednesday: A chance of snow before 10am, then a chance of rain between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 44. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 44 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. Southwest wind around 5 mph.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of snow before 10am, then rain and snow likely. Mostly cloudy, with a high near 41. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 41 °F

    Slight Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Rain and snow likely, mainly before 1am. Mostly cloudy, with a low around 28. Chance of precipitation is 70%.

    Low: 28 °F

    Rain/Snow
    Likely

  • Friday

    Friday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 19. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 29. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Snow likely after 1am. Increasing clouds, with a low around 17. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday
A chance of snow before 10am, then a chance of rain between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 44. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 29. Southwest wind around 5 mph.
Thursday
A slight chance of snow before 10am, then rain and snow likely. Mostly cloudy, with a high near 41. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain and snow likely, mainly before 1am. Mostly cloudy, with a low around 28. Chance of precipitation is 70%.
Friday
Mostly sunny, with a high near 42.
Friday Night
Mostly clear, with a low around 24.
Saturday
Sunny, with a high near 47.
Saturday Night
Mostly clear, with a low around 30.
Sunday
Partly sunny, with a high near 45.
Sunday Night
Mostly cloudy, with a low around 23.
Monday
A chance of rain and snow. Mostly cloudy, with a high near 34. 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:
4:58 pm EST Feb 23, 2026
Forecast Valid:
10pm EST Feb 23, 2026-6pm EST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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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