New Brunswick, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Brunswick, a city in Middlesex County, New Jersey.
Today
73°F
Mostly Sunny
Mostly sunny, with a high near 73. East wind around 5 mph.
7-day forecast for New Brunswick
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Mostly Sunny | 5 mph E | 1% |
| Tonight | 58°F | Mostly Cloudy | 0 to 5 mph SE | 5% |
| Sunday | 73°F | Rain Showers | 5 mph SE | 84% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 5 to 10 mph W | 71% |
| Monday | 69°F | Chance Rain Showers | 5 to 10 mph NE | 38% |
| Monday Night | 52°F | Chance Rain Showers | 5 to 10 mph NE | 27% |
| Tuesday | 64°F | Chance Rain Showers | 10 mph NE | 32% |
| Tuesday Night | 51°F | Chance Rain Showers | 10 mph NE | 29% |
| Wednesday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 25% |
| Wednesday Night | 51°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Thursday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Thursday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 35% |
| Friday | 66°F | Chance Rain Showers | 10 mph N | 33% |
| Friday Night | 50°F | Chance Rain Showers | 5 to 10 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov) for New Brunswick (40.487, -74.444). Updated through the day.
Growing snapshot for New Brunswick
Last spring frost
Apr 15
First fall frost
Oct 26
Growing season
193 days
Hardiness zone
7a
More local growing data for New Brunswick: nearby ZIP 08901 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
Avenel
Brownville
Carteret
Clearbrook
Colonia
Concordia
Cranbury
Dayton
Deans
East Franklin
Encore at Monroe
Fords
Forsgate
Heathcote
Helmetta
Highland Park
Hopelawn
Iselin
Jamesburg
Keasbey
Kendall Park
Madison Park
Matawan
Menlo Park Terrace
Metuchen
Middlesex
Milltown
Monmouth Junction
Old Bridge
Perth Amboy
Climate data from the nearest NOAA station, New Brunswick 3 Se, Nj (1.3 mi from New Brunswick). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.