Llewellyn Park, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Llewellyn Park, a community in Essex County, New Jersey.
This Afternoon
84°F
Mostly Sunny
Mostly sunny, with a high near 84. East wind around 5 mph.
7-day forecast for Llewellyn Park
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Mostly Sunny | 5 mph E | 0% |
| Tonight | 67°F | Mostly Cloudy | 5 mph W | 4% |
| Wednesday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph E | 38% |
| Wednesday Night | 72°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 6 mph S | 32% |
| Thursday | 88°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 9 mph SW | 42% |
| Thursday Night | 74°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 to 8 mph SW | 42% |
| Friday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 8 mph SW | 45% |
| Friday Night | 73°F | Chance Showers And Thunderstorms | 6 mph W | 43% |
| Saturday | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 9 mph SW | 36% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 to 8 mph W | 36% |
| Sunday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 8 mph W | 15% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 7 mph SW | 15% |
| Monday | 89°F | Mostly Sunny | 5 to 10 mph W | 11% |
| Monday Night | 72°F | Partly Cloudy | 6 to 9 mph W | 12% |
Forecast source: National Weather Service (api.weather.gov) for Llewellyn Park (40.789, -74.240). Updated through the day.
Growing snapshot for Llewellyn Park
Last spring frost
Apr 4
First fall frost
Nov 6
Growing season
216 days
Hardiness zone
7a
More local growing data for Llewellyn Park: nearby ZIP 07050 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
Ampere North
Caldwell
East Orange
Essex Fells
Glen Ridge
Newark
North Caldwell
Pleasantdale
Roseland
Short Hills
Silver Lake
Springfield
Upper Montclair
Watsessing
Climate data from the nearest NOAA station, Harrison, Nj (4.6 mi from Llewellyn Park). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.