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.

Overcast

50°F

10°C

Humidity 89%
Wind Speed SE 8 mph
Barometer 29.95 in (1013.4 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 18 Apr 8:53 pm EDT
Extended Forecast for

Monmouth Junction NJ

Freeze Watch April 21, 12:00am until April 21, 09:00am
Coastal Flood Advisory until April 19, 02:00am
Click here for hazard details and duration
Freeze Watch
Coastal Flood Advisory
  •  
    Coastal Flood Advisory until April 19, 02:00am

    NOW until 2:00am Sun

    Coastal Flood Advisory

  • Tonight

    Low: 49 °F

    Areas Fog

  • Sunday

    Sunday: Showers, mainly before 2pm. High near 56. Northwest wind 5 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 38. West wind around 5 mph becoming calm in the evening.

    Low: 38 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers. Mostly sunny, with a high near 52. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 52 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Patchy frost after 1am. Otherwise, mostly clear, with a low around 30. North wind around 5 mph.

    Low: 30 °F

    Mostly Clear
    then Patchy
    Frost

  • Tuesday

    Tuesday: Areas of frost before 9am. Otherwise, sunny, with a high near 54.

    High: 54 °F

    Areas Frost
    then Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Areas of fog after 11pm. Otherwise, cloudy, with a low around 49. East wind around 5 mph.
Sunday
Showers, mainly before 2pm. High near 56. Northwest wind 5 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Partly cloudy, with a low around 38. West wind around 5 mph becoming calm in the evening.
Monday
A slight chance of showers. Mostly sunny, with a high near 52. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.
Monday Night
Patchy frost after 1am. Otherwise, mostly clear, with a low around 30. North wind around 5 mph.
Tuesday
Areas of frost before 9am. Otherwise, sunny, with a high near 54.
Tuesday Night
Partly cloudy, with a low around 39.
Wednesday
Mostly cloudy, with a high near 66.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
Sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 49.
Saturday
A chance of showers. Partly sunny, with a high near 68. 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 18, 2026
Forecast Valid:
9pm EDT Apr 18, 2026-6pm EDT Apr 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