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.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. East wind around 0 mph.
7-day forecast for North Plainfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 0 mph | 0% |
| Tonight | 65°F | Mostly Cloudy | 0 mph | 1% |
| Wednesday | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 44% |
| Wednesday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 37% |
| Thursday | 89°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph SW | 40% |
| Thursday Night | 73°F | Chance Showers And Thunderstorms | 5 mph SW | 43% |
| Friday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SW | 45% |
| Friday Night | 71°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 | 38% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 38% |
| Sunday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 15% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SW | 15% |
| Monday | 90°F | Mostly Sunny | 5 to 10 mph W | 10% |
| Monday Night | 71°F | Partly Cloudy | 5 to 10 mph W | 12% |
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 Aug 4, 2026.