Delaware City, DE 19894 Frost Dates
19894, near Delaware City, DE: the frost window
The last spring frost here typically falls around 04/07, about 222 days from today. Fall's first freeze usually shows up around 11/01, roughly 209 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Delaware City in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's 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.
Why 04/07 isn't a guarantee
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
At roughly 209 frost-free days, Delaware City places 15,285 of 40,283 ZIP codes in this dataset. Within DE, it ranks 71 of 96.
Learn more
Two guides worth reading on 19894: the frost range, on how to read the range around Delaware City's dates instead of trusting one, and local microclimates, on what one yard in Delaware City can differ from the 19894 normal.