National Weather Service Forecast for: Monmouth Junction NJ
Issued by: National Weather Service Philadelphia, PA
Updated: 6:05 pm EST Dec 17, 2025
 
Tonight

Tonight: Patchy freezing fog after 11pm. Mostly cloudy, with a low around 23. West wind around 5 mph becoming calm in the evening.
Patchy
Freezing Fog

 Thursday

Thursday: Patchy fog between 10am and 11am. Patchy freezing fog before 10am. Otherwise, partly sunny, with a high near 46. Calm wind becoming southeast around 5 mph in the afternoon.
Patchy
Freezing Fog
and Patchy
Fog then
Mostly Cloudy
 Thursday
Night
Thursday Night: Rain, with thunderstorms also possible after 4am. Temperature rising to around 55 by 5am. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Rain and
Breezy

 Friday

Friday: Showers and possibly a thunderstorm before 1pm. High near 56. Breezy, with a south wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers and
Breezy

 Friday
Night
Friday Night: Partly cloudy, with a low around 24. Breezy, with a west wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 35 mph.
Partly Cloudy
and Breezy
then Partly
Cloudy
 Saturday

Saturday: Mostly sunny, with a high near 40.
Mostly Sunny


 Saturday
Night
Saturday Night: Mostly cloudy, with a low around 31.
Mostly Cloudy


 Sunday

Sunday: Mostly sunny, with a high near 47.
Mostly Sunny


 Sunday
Night
Sunday Night: Mostly clear, with a low around 24.
Mostly Clear
Lo 23 °F Hi 46 °F Lo 43 °F⇑ Hi 56 °F Lo 24 °F Hi 40 °F Lo 31 °F Hi 47 °F Lo 24 °F

Wind Advisory
 

Tonight
 
 Patchy freezing fog after 11pm. Mostly cloudy, with a low around 23. West wind around 5 mph becoming calm in the evening.
Thursday
 
 Patchy fog between 10am and 11am. Patchy freezing fog before 10am. Otherwise, partly sunny, with a high near 46. Calm wind becoming southeast around 5 mph in the afternoon.
Thursday Night
 
 Rain, with thunderstorms also possible after 4am. Temperature rising to around 55 by 5am. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday
 
 Showers and possibly a thunderstorm before 1pm. High near 56. Breezy, with a south wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
 
 Partly cloudy, with a low around 24. Breezy, with a west wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 35 mph.
Saturday
 
 Mostly sunny, with a high near 40.
Saturday Night
 
 Mostly cloudy, with a low around 31.
Sunday
 
 Mostly sunny, with a high near 47.
Sunday Night
 
 Mostly clear, with a low around 24.
Monday
 
 Sunny, with a high near 37.
Monday Night
 
 Partly cloudy, with a low around 23.
Tuesday
 
 A chance of rain and snow. Mostly cloudy, with a high near 42. Chance of precipitation is 30%.
Tuesday Night
 
 Mostly cloudy, with a low around 31.
Wednesday
 
 Mostly sunny, with a high near 43.

 

Forecast from NOAA-NWS for Monmouth Junction NJ.