Cranbury, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cranbury, a community in Middlesex County, New Jersey.
Tonight
58°F
Mostly Cloudy
Mostly cloudy, with a low around 58. East wind 0 to 5 mph.
7-day forecast for Cranbury
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Mostly Cloudy | 0 to 5 mph E | 5% |
| Sunday | 76°F | Rain Showers Likely | 5 to 10 mph SE | 70% |
| Sunday Night | 57°F | Rain Showers Likely | 5 mph W | 68% |
| Monday | 69°F | Chance Rain Showers | 5 to 10 mph NE | 30% |
| Monday Night | 52°F | Chance Rain Showers | 5 mph NE | 30% |
| Tuesday | 66°F | Chance Rain Showers | 5 to 10 mph NE | 35% |
| Tuesday Night | 51°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 35% |
| Wednesday | 65°F | Slight Chance Rain Showers | 10 to 15 mph NE | 21% |
| Wednesday Night | 51°F | Slight Chance Rain Showers | 10 to 15 mph NE | 21% |
| Thursday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 30% |
| Thursday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 36% |
| Friday | 66°F | Chance Rain Showers | 10 to 15 mph N | 37% |
| Friday Night | 50°F | Chance Rain Showers | 5 to 10 mph N | 37% |
| Saturday | 69°F | Chance Rain Showers | 10 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov) for Cranbury (40.313, -74.520). Updated through the day.
Growing snapshot for Cranbury
Last spring frost
Apr 25
First fall frost
Oct 16
Growing season
173 days
Hardiness zone
7a
More local growing data for Cranbury: nearby ZIP 08512 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
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Brownville
Carteret
Clearbrook
Colonia
Concordia
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
New Brunswick
Old Bridge
Perth Amboy
Climate data from the nearest NOAA station, Hightstown 2 W, Nj (4.5 mi from Cranbury). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.