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

27°F

-3°C

Humidity 45%
Wind Speed W 14 G 24 mph
Barometer 29.81 in (1009.2 mb)
Dewpoint 8°F (-13°C)
Visibility NA
Wind Chill16°F (-9°C)
Last update 31 Dec 12:53 am EST
Extended Forecast for

Monmouth Junction NJ

  • Overnight

    Overnight: Mostly cloudy, with a low around 23. West wind around 10 mph, with gusts as high as 20 mph.

    Low: 23 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 35. Southwest wind 10 to 15 mph.

    High: 35 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 22. Southwest wind around 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 22 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • New Year's Day

    New Year's Day: Mostly cloudy, then gradually becoming sunny, with a high near 31. Northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 31 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 14. West wind around 5 mph.

    Low: 14 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 34.

    High: 34 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 23. West wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 35. Southwest wind 10 to 15 mph.
Wednesday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 22. Southwest wind around 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
New Year's Day
Mostly cloudy, then gradually becoming sunny, with a high near 31. Northwest wind around 15 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 14. West wind around 5 mph.
Friday
Mostly cloudy, with a high near 34.
Friday Night
Partly cloudy, with a low around 20.
Saturday
Mostly sunny, with a high near 34.
Saturday Night
Partly cloudy, with a low around 17.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Partly cloudy, with a low around 21.
Monday
A chance of snow. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Monday Night
A chance of rain. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 37.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monmouth Junction NJ
 40.38°N 74.55°W (Elev. 98 ft)
Last Update:
4:12 pm EST Dec 30, 2025
Forecast Valid:
1am EST Dec 31, 2025-6pm EST Jan 6, 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