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.
Tonight
61°F
Mostly Cloudy then Slight Chance Rain Showers
A slight chance of rain showers after 5am. Mostly cloudy. Low around 61, with temperatures rising to around 63 overnight. Southeast wind 5 to 8 mph. Chance of precipitation is 20%.
7-day forecast for Llewellyn Park
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 8 mph SE | 19% |
| Sunday | 72°F | Rain Showers then Rain Likely | 7 to 10 mph SE | 90% |
| Sunday Night | 59°F | Rain Likely then Rain Showers Likely | 6 to 13 mph W | 81% |
| Monday | 68°F | Slight Chance Rain Showers | 8 to 13 mph NE | 22% |
| Monday Night | 54°F | Chance Rain Showers | 7 to 12 mph NE | 30% |
| Tuesday | 64°F | Chance Rain Showers | 12 mph NE | 30% |
| Tuesday Night | 52°F | Chance Rain Showers then Mostly Cloudy | 10 to 14 mph NE | 29% |
| Wednesday | 65°F | Mostly Cloudy then Slight Chance Rain Showers | 15 mph NE | 18% |
| Wednesday Night | 52°F | Slight Chance Rain Showers | 16 mph NE | 21% |
| Thursday | 63°F | Chance Rain Showers | 13 to 16 mph NE | 28% |
| Thursday Night | 51°F | Chance Rain Showers | 14 to 17 mph NE | 36% |
| Friday | 65°F | Chance Rain Showers | 13 to 17 mph N | 36% |
| Friday Night | 53°F | Chance Rain Showers | 16 mph N | 35% |
| Saturday | 69°F | Chance Rain Showers | 12 to 16 mph N | 30% |
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 Sep 20, 2026.