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

40°F

4°C

Humidity 93%
Wind Speed Calm
Barometer 30.10 in (1018.8 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 19 Apr 10:53 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 35. Northwest wind around 5 mph becoming calm.

    Low: 35 °F

    Patchy Frost

  • Monday

    Monday: A chance of showers, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 53. Northwest wind 5 to 15 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. Northwest wind around 5 mph.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 54. Calm wind becoming northwest around 5 mph.

    High: 54 °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 35. Northwest wind around 5 mph becoming calm.
Monday
A chance of showers, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 53. Northwest wind 5 to 15 mph. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 30. Northwest wind around 5 mph.
Tuesday
Sunny, with a high near 54. 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
 40.37°N 74.52°W (Elev. 98 ft)
Last Update:
4:11 pm EDT Apr 19, 2026
Forecast Valid:
11pm EDT Apr 19, 2026-6pm EDT Apr 26, 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