Delaware City, DE 19726 Frost Dates
19726, near Delaware City, DE: the frost window
Typically, the last spring freeze lands around 04/07, roughly 222 days out. Fall's first freeze usually shows up around 11/01, roughly 209 days after the last spring frost.
Delaware City sits in USDA Zone 7b (5 to 10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Delaware City's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/26 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/21 and only about 1 year in 10 sees frost after that.
Delaware City against the rest of the dataset
Delaware City's growing season runs about 209 days, ranking 15,274 of 40,283 US ZIP codes measured here, longest to shortest. Within DE, it ranks 60 of 96.
Learn more
Two guides worth reading on 19726: local microclimates, on what one yard in Delaware City can differ from the 19726 normal, and zone vs. frost date, on why Zone 7b and Delaware City's frost date answer different questions.