Monmouth Junction, NJ Weather & Growing Conditions
Overnight
48°F
Mostly Clear
Mostly clear, with a low around 48. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Mostly Clear | 5 mph SW | 2% |
| Wednesday | 75°F | Patchy Fog then Sunny | 0 to 5 mph SW | 2% |
| Wednesday Night | 57°F | Mostly Cloudy | 5 mph S | 3% |
| Thursday | 73°F | Chance Light Rain | 5 to 10 mph S | 35% |
| Thursday Night | 61°F | Light Rain | 5 mph SW | 75% |
| Friday | 69°F | Light Rain | 0 to 5 mph SW | 78% |
| Friday Night | 52°F | Light Rain Likely | 0 to 5 mph W | 78% |
| Saturday | 66°F | Chance Light Rain | 5 mph NW | 45% |
| Saturday Night | 41°F | Partly Cloudy | 5 mph NW | 13% |
| Sunday | 61°F | Mostly Sunny | 5 mph W | 11% |
| Sunday Night | 38°F | Partly Cloudy then Slight Chance Light Rain | 5 mph W | 18% |
| Monday | 60°F | Slight Chance Light Rain | 5 to 10 mph W | 23% |
| Monday Night | 37°F | Slight Chance Light Rain | 5 mph W | 22% |
| Tuesday | 62°F | Slight Chance Light Rain then Sunny | 5 to 10 mph W | 15% |
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 Nov 4, 2026.