Magnolia, DE 19903 Frost Dates
Magnolia, DE: when does the frost end?
Around 04/04 is the usual last spring frost, about 219 days away. Fall's first freeze usually shows up around 11/04, roughly 214 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Magnolia 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 10 weeks until Magnolia's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/04 isn't a guarantee
04/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/17 and only about 1 year in 10 sees frost after that.
Magnolia against the rest of the dataset
About 214 days separate Magnolia's last and first frost, putting it 14,366 of 40,283 ZIP codes nationally. Within DE, it ranks 23 of 96.
Learn more
Before leaning on 19903's figures: zone vs. frost date explains why Zone 7b and Magnolia's frost date answer different questions, while the frost range explains how to read the range around Magnolia's dates instead of trusting one.