National Weather Service Forecast for: Monmouth Junction NJ
Issued by: National Weather Service Philadelphia, PA
Updated: 4:12 pm EST Dec 22, 2025
 
Tonight

Tonight: Snow likely, mainly after 5am. Mostly cloudy, with a low around 28. Southwest wind around 5 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Mostly Cloudy
then Snow
Likely
 Tuesday

Tuesday: Snow, possibly mixed with rain before 1pm, then a chance of rain. High near 42. Southeast wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Rain/Snow
then
Rain/Snow
Likely
 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 33. West wind 5 to 10 mph, with gusts as high as 20 mph.
Partly Cloudy

 Wednesday

Wednesday: Sunny, with a high near 44. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunny

 Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 25. Calm wind.
Mostly Cloudy

 Christmas
Day
Christmas Day: A slight chance of rain and snow before 1pm. Mostly cloudy, with a high near 44. Chance of precipitation is 20%.
Slight Chance
Rain/Snow

 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 28.
Mostly Cloudy

 Friday

Friday: Snow, mainly after 1pm. High near 36. Chance of precipitation is 80%.
Chance Snow
then Snow

 Friday
Night
Friday Night: Rain, snow, and freezing rain, mainly before 1am. Low around 30. Chance of precipitation is 80%.
Wintry Mix
Lo 28 °F Hi 42 °F Lo 33 °F Hi 44 °F Lo 25 °F Hi 44 °F Lo 28 °F Hi 36 °F Lo 30 °F

 

Tonight
 
 Snow likely, mainly after 5am. Mostly cloudy, with a low around 28. Southwest wind around 5 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Tuesday
 
 Snow, possibly mixed with rain before 1pm, then a chance of rain. High near 42. Southeast wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday Night
 
 Partly cloudy, with a low around 33. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
 
 Sunny, with a high near 44. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
 
 Mostly cloudy, with a low around 25. Calm wind.
Christmas Day
 
 A slight chance of rain and snow before 1pm. Mostly cloudy, with a high near 44. Chance of precipitation is 20%.
Thursday Night
 
 Mostly cloudy, with a low around 28.
Friday
 
 Snow, mainly after 1pm. High near 36. Chance of precipitation is 80%.
Friday Night
 
 Rain, snow, and freezing rain, mainly before 1am. Low around 30. Chance of precipitation is 80%.
Saturday
 
 A chance of rain and snow before 1pm, then a chance of rain. Cloudy, with a high near 38. Chance of precipitation is 40%.
Saturday Night
 
 A chance of rain. Cloudy, with a low around 32. Chance of precipitation is 40%.
Sunday
 
 Rain likely. Cloudy, with a high near 47. Chance of precipitation is 60%.
Sunday Night
 
 A chance of rain. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.
Monday
 
 Mostly sunny, with a high near 33.

 

Forecast from NOAA-NWS for Monmouth Junction NJ.