Delaware City, DE 19715 Frost Dates
Delaware City, DE: when does the frost end?
Around 04/07 is the usual last spring frost, about 222 days away. 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
About 209 days separate Delaware City's last and first frost, putting it 15,268 of 40,283 ZIP codes nationally. Within DE, it ranks 54 of 96.
Learn more
Before leaning on 19715'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 19715 normal.