National Weather Service Forecast for: Monmouth Junction NJ
Issued by: National Weather Service Philadelphia, PA
Updated: 9:44 pm EST Dec 4, 2025
 
Overnight

Overnight: Mostly cloudy, with a low around 17. Calm wind.
Mostly Cloudy
Friday

Friday: Mostly cloudy, with a high near 34. Calm wind.
Mostly Cloudy
Friday
Night
Friday Night: A slight chance of snow.  Mostly cloudy, with a low around 24. Calm wind.  Chance of precipitation is 20%.
Slight Chance
Snow
Saturday

Saturday: Partly sunny, with a high near 43. Calm wind becoming west around 5 mph.
Partly Sunny
Saturday
Night
Saturday Night: Partly cloudy, with a low around 23. Calm wind.
Partly Cloudy
Sunday

Sunday: Partly sunny, with a high near 41.
Partly Sunny
Sunday
Night
Sunday Night: Mostly cloudy, with a low around 23.
Mostly Cloudy
Monday

Monday: Sunny, with a high near 34.
Sunny
Monday
Night
Monday Night: Mostly clear, with a low around 14.
Mostly Clear
Lo 17 °F Hi 34 °F Lo 24 °F Hi 43 °F Lo 23 °F Hi 41 °F Lo 23 °F Hi 34 °F Lo 14 °F

 

Overnight
 
Mostly cloudy, with a low around 17. Calm wind.
Friday
 
Mostly cloudy, with a high near 34. Calm wind.
Friday Night
 
A slight chance of snow. Mostly cloudy, with a low around 24. Calm wind. Chance of precipitation is 20%.
Saturday
 
Partly sunny, with a high near 43. Calm wind becoming west around 5 mph.
Saturday Night
 
Partly cloudy, with a low around 23. Calm wind.
Sunday
 
Partly sunny, with a high near 41.
Sunday Night
 
Mostly cloudy, with a low around 23.
Monday
 
Sunny, with a high near 34.
Monday Night
 
Mostly clear, with a low around 14.
Tuesday
 
Partly sunny, with a high near 36.
Tuesday Night
 
A chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Wednesday
 
Mostly cloudy, with a high near 42.
Wednesday Night
 
A chance of rain. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Thursday
 
A chance of rain. Mostly cloudy, with a high near 43. Chance of precipitation is 40%.

 

Forecast from NOAA-NWS for Monmouth Junction NJ.