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.

Fog/Mist

40°F

4°C

Humidity 86%
Wind Speed Calm
Barometer 29.79 in (1008.1 mb)
Dewpoint 36°F (2°C)
Visibility 5.00 mi
Last update 18 Feb 6:53 pm EST
Extended Forecast for

Monmouth Junction NJ

  • Tonight

    Tonight: Light rain likely, mainly before midnight. Patchy fog. Otherwise, cloudy, with a low around 35. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Light Rain
    Likely and
    Patchy Fog

  • Thursday

    Thursday: A slight chance of light rain before 9am, then a chance of light rain after 2pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 43. East wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 43 °F

    Chance Light
    Rain and
    Patchy Fog

  • Thursday Night

    Thursday Night: Periods of rain, mainly after 1am. Patchy fog between 2am and 5am. Low around 35. East wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 35 °F

    Chance Rain
    then Rain and
    Patchy Fog

  • Friday

    Friday: Periods of rain. Patchy fog before 8am. High near 43. East wind around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 43 °F

    Rain and
    Patchy Fog

  • Friday Night

    Friday Night: A chance of rain before 1am. Mostly cloudy, with a low around 35. Northeast wind around 5 mph becoming west after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of rain and snow after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday

    Sunday: Snow likely, mainly after 1pm. Mostly cloudy, with a high near 38. Chance of precipitation is 60%.

    High: 38 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A chance of snow. Mostly cloudy, with a low around 29. Chance of precipitation is 50%.

    Low: 29 °F

    Chance Snow

Detailed Forecast

Tonight
Light rain likely, mainly before midnight. Patchy fog. Otherwise, cloudy, with a low around 35. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A slight chance of light rain before 9am, then a chance of light rain after 2pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 43. East wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Periods of rain, mainly after 1am. Patchy fog between 2am and 5am. Low around 35. East wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Periods of rain. Patchy fog before 8am. High near 43. East wind around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A chance of rain before 1am. Mostly cloudy, with a low around 35. Northeast wind around 5 mph becoming west after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Partly sunny, with a high near 48.
Saturday Night
A chance of rain and snow after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Sunday
Snow likely, mainly after 1pm. Mostly cloudy, with a high near 38. Chance of precipitation is 60%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 29. Chance of precipitation is 50%.
Monday
A chance of snow before 1pm. Mostly cloudy, with a high near 40. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 24.
Tuesday
Sunny, with a high near 38.
Tuesday Night
Partly cloudy, with a low around 21.
Wednesday
Partly sunny, with a high near 45.
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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:
4:18 pm EST Feb 18, 2026
Forecast Valid:
7pm EST Feb 18, 2026-6pm EST Feb 25, 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