Cranbury, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cranbury, a community in Middlesex County, New Jersey.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. East wind around 0 mph.
7-day forecast for Cranbury
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 0 mph | 0% |
| Tonight | 64°F | Mostly Cloudy | 0 mph | 2% |
| Wednesday | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SE | 49% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 54% |
| Thursday | 89°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 10 mph SW | 30% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms | 5 mph SW | 30% |
| Friday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SW | 42% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 45% |
| Saturday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 37% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 37% |
| Sunday | 88°F | Mostly Sunny | 0 to 5 mph W | 14% |
| Sunday Night | 70°F | Mostly Clear | 0 to 5 mph SW | 14% |
| Monday | 90°F | Sunny | 0 to 10 mph W | 9% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 5 mph W | 15% |
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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Carteret
Clearbrook
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Deans
East Franklin
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Fords
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Heathcote
Helmetta
Highland Park
Hopelawn
Iselin
Jamesburg
Keasbey
Kendall Park
Madison Park
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Metuchen
Middlesex
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Monmouth Junction
New Brunswick
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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 Aug 4, 2026.