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.

A Few Clouds

43°F

6°C

Humidity 80%
Wind Speed W 3 mph
Barometer 30.06 in (1017.4 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 19 Apr 8:53 pm EDT
Extended Forecast for

Monmouth Junction NJ

Freeze Watch April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Tonight

    Tonight: Patchy frost after 4am. Otherwise, increasing clouds, with a low around 36. Northwest wind around 5 mph becoming calm in the evening.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Monday

    Monday: A chance of showers, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 53. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 53 °F

    Chance
    Showers then
    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 30. North wind around 5 mph.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 55. Calm wind becoming northwest around 5 mph.

    High: 55 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 41. South wind around 5 mph. Chance of precipitation is 30%.

    Low: 41 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly before 8am. Partly sunny, with a high near 65. Chance of precipitation is 30%.

    High: 65 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy frost after 4am. Otherwise, increasing clouds, with a low around 36. Northwest wind around 5 mph becoming calm in the evening.
Monday
A chance of showers, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 53. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 30. North wind around 5 mph.
Tuesday
Sunny, with a high near 55. Calm wind becoming northwest around 5 mph.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 41. South wind around 5 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers, mainly before 8am. Partly sunny, with a high near 65. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Mostly sunny, with a high near 73.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Mostly sunny, with a high near 71.
Friday Night
A chance of showers. Partly cloudy, with a low around 48. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 63. Chance of precipitation is 50%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.
Sunday
A chance of showers. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.
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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:
4:11 pm EDT Apr 19, 2026
Forecast Valid:
9pm EDT Apr 19, 2026-6pm EDT Apr 26, 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