Delaware, NJ Weather & Growing Conditions
Today
73°F
Mostly Sunny
Mostly sunny. High near 73, with temperatures falling to around 67 in the afternoon. South wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Mostly Sunny | 0 to 5 mph S | 1% |
| Tonight | 55°F | Mostly Cloudy then Patchy Fog | 0 to 5 mph S | 7% |
| Thursday | 70°F | Light Rain | 5 mph S | 76% |
| Thursday Night | 58°F | Light Rain | 0 to 5 mph SW | 79% |
| Friday | 70°F | Light Rain Likely | 0 mph | 56% |
| Friday Night | 47°F | Chance Light Rain | 0 mph | 47% |
| Saturday | 64°F | Mostly Sunny then Slight Chance Light Rain | 0 to 5 mph W | 24% |
| Saturday Night | 40°F | Slight Chance Light Rain | 0 to 5 mph W | 24% |
| Sunday | 58°F | Mostly Sunny | 5 mph NW | 7% |
| Sunday Night | 35°F | Partly Cloudy | 0 to 5 mph W | 4% |
| Monday | 58°F | Sunny | 5 to 10 mph W | 7% |
| Monday Night | 33°F | Mostly Clear | 0 to 5 mph W | 5% |
| Tuesday | 62°F | Sunny | 0 to 10 mph SW | 5% |
| Tuesday Night | 34°F | Mostly Clear | 0 to 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Delaware, NJ
Last spring frost
Apr 30
First fall frost
Oct 18
Growing season
168 days
Hardiness zone
7a
Explore more for Delaware, NJ: full frost dates · planting calendar · New Jersey frost dates
Climate data from the nearest NOAA station, Belvidere Brg, Nj (4.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.