Selbyville, DE 21813 Frost Dates
Selbyville, 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 11/02, roughly 209 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Selbyville 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 Selbyville'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 03/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/23 and only about 1 year in 10 sees frost after that.
Selbyville against the rest of the dataset
At roughly 209 frost-free days, Selbyville places 15,244 of 40,283 ZIP codes in this dataset. Within DE, it ranks 46 of 96.
Learn more
Before leaning on 21813's figures: local microclimates explains what one yard in Selbyville can differ from the 21813 normal, while zone vs. frost date explains why Zone 7b and Selbyville's frost date answer different questions.