Delaware City, DE 19706 Frost Dates
Delaware City, DE: when does the frost end?
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
With roughly 9 weeks until Delaware City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
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 15,264 of 40,283 US ZIP codes measured here, longest to shortest. Within DE, it ranks 50 of 96.
Learn more
Before leaning on 19706's figures: the frost range explains how to read the range around Delaware City's dates instead of trusting one, while local microclimates explains what one yard in Delaware City can differ from the 19706 normal.