Delaware, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Delaware, a community in Warren County, New Jersey.
This Afternoon
72°F
Mostly Cloudy
Mostly cloudy, with a high near 72. Southeast wind around 0 mph.
7-day forecast for Delaware
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Mostly Cloudy | 0 mph | 1% |
| Tonight | 56°F | Mostly Cloudy then Chance Rain Showers | 0 to 5 mph E | 50% |
| Sunday | 71°F | Rain Showers | 0 to 5 mph SE | 96% |
| Sunday Night | 54°F | Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph N | 77% |
| Monday | 70°F | Partly Sunny then Slight Chance Rain Showers | 5 mph NE | 21% |
| Monday Night | 48°F | Chance Rain Showers | 5 mph NE | 31% |
| Tuesday | 64°F | Chance Rain Showers | 5 mph NE | 33% |
| Tuesday Night | 47°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 32% |
| Wednesday | 63°F | Slight Chance Rain Showers | 10 mph NE | 19% |
| Wednesday Night | 47°F | Slight Chance Rain Showers | 5 to 10 mph NE | 21% |
| Thursday | 62°F | Slight Chance Rain Showers | 5 to 10 mph NE | 23% |
| Thursday Night | 47°F | Chance Rain Showers | 5 to 10 mph NE | 29% |
| Friday | 66°F | Chance Rain Showers | 10 mph N | 31% |
| Friday Night | 48°F | Chance Rain Showers | 5 to 10 mph N | 31% |
Forecast source: National Weather Service (api.weather.gov) for Delaware (40.893, -75.069). Updated through the day.
Growing snapshot for Delaware
Last spring frost
Apr 30
First fall frost
Oct 18
Growing season
168 days
Hardiness zone
7a
More local growing data for Delaware: nearby ZIP 07833 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
Allamuchy
Alpha
Anderson
Belvidere
Blairstown
Brass Castle
Bridgeville
Broadway
Brookfield
Buttzville
Delaware Park
Great Meadows
Greenwich
Hackettstown
Hainesburg
Harmony
Hope
Johnsonburg
Lopatcong Overlook
Marksboro
Mount Hermon
Mountain Lake
New Village
Oxford
Panther Valley
Phillipsburg
Port Colden
Port Murray
Silver Lake
Stewartsville
Climate data from the nearest NOAA station, Belvidere Brg, Nj (4.5 mi from Delaware). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.