FrostDateCheck

Selbyville, DE 19975 Frost Dates

19975, near Selbyville, DE: the frost window

Zone 7b

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

Selbyville'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 03/24 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

Selbyville's growing season runs about 209 days, ranking 15,243 of 40,283 US ZIP codes measured here, longest to shortest. Within DE, it ranks 45 of 96.

Learn more

Two guides worth reading on 19975: the frost range, on how to read the range around Selbyville's dates instead of trusting one, and local microclimates, on what one yard in Selbyville can differ from the 19975 normal.