Monmouth Junction, NJ Weather & Growing Conditions
Overnight
57°F
Partly Cloudy
Partly cloudy, with a low around 57. North wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Partly Cloudy | 5 mph N | 0% |
| Saturday | 71°F | Mostly Sunny | 5 mph E | 1% |
| Saturday Night | 60°F | Patchy Fog | 5 mph SE | 19% |
| Sunday | 73°F | Showers And Thunderstorms | 5 to 10 mph SE | 82% |
| Sunday Night | 60°F | Showers And Thunderstorms | 5 mph W | 85% |
| Monday | 68°F | Chance Rain Showers | 5 to 10 mph NE | 44% |
| Monday Night | 54°F | Chance Rain Showers | 5 to 10 mph NE | 27% |
| Tuesday | 63°F | Chance Rain Showers | 10 mph NE | 34% |
| Tuesday Night | 51°F | Chance Rain Showers | 10 mph NE | 28% |
| Wednesday | 62°F | Chance Rain Showers | 10 mph NE | 30% |
| Wednesday Night | 51°F | Chance Rain Showers | 10 mph NE | 42% |
| Thursday | 62°F | Chance Rain Showers | 10 mph NE | 36% |
| Thursday Night | 51°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 34% |
| Friday | 67°F | Chance Rain Showers | 5 mph N | 28% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Monmouth Junction, NJ
Last spring frost
Apr 15
First fall frost
Oct 26
Growing season
193 days
Hardiness zone
7a
Explore more for Monmouth Junction, NJ: full frost dates · planting calendar · New Jersey frost dates
Climate data from the nearest NOAA station, New Brunswick 3 Se, Nj (8.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.