North Plainfield, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for North Plainfield, a borough in Union County, New Jersey.
Tonight
60°F
Mostly Cloudy
Mostly cloudy, with a low around 60. Southeast wind around 5 mph.
7-day forecast for North Plainfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 60°F | Mostly Cloudy | 5 mph SE | 10% |
| Sunday | 73°F | Rain Showers | 5 mph SE | 86% |
| Sunday Night | 58°F | Showers And Thunderstorms | 5 to 10 mph W | 80% |
| Monday | 68°F | Chance Rain Showers | 5 to 10 mph NE | 25% |
| Monday Night | 53°F | Chance Rain Showers | 5 to 10 mph NE | 30% |
| Tuesday | 64°F | Chance Rain Showers | 10 mph NE | 31% |
| Tuesday Night | 51°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 31% |
| Wednesday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 19% |
| Wednesday Night | 51°F | Slight Chance Rain Showers | 10 to 15 mph NE | 21% |
| Thursday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 28% |
| Thursday Night | 51°F | Chance Rain Showers | 10 to 15 mph NE | 35% |
| Friday | 65°F | Chance Rain Showers | 10 to 15 mph N | 35% |
| Friday Night | 52°F | Chance Rain Showers | 10 to 15 mph N | 35% |
| Saturday | 68°F | Chance Rain Showers | 10 to 15 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov) for North Plainfield (40.621, -74.439). Updated through the day.
Growing snapshot for North Plainfield
Last spring frost
Apr 11
First fall frost
Oct 28
Growing season
198 days
Hardiness zone
7a
More local growing data for North Plainfield: nearby ZIP 07063 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
Chatham
Connecticut Farms
Cranford
Elizabeth
Fanwood
Garwood
Kean University
Kenilworth
Linden
Mountainside
New Providence
Plainfield
Rahway
Roselle
Roselle Park
Summit
Union
Vauxhall
Westfield
Climate data from the nearest NOAA station, Plainfield, Nj (2.2 mi from North Plainfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.