Marcus Hook, PA 19061 Frost Dates
19061, near Marcus Hook, PA: the frost window
Around 04/07 is the usual last spring frost, about 222 days away. Fall's first freeze usually shows up around 11/04, roughly 209 days after the last spring frost.
Zone 7b (5 to 10°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Marcus Hook, not a forecast for this year.
Stretching the season past the first frost
Marcus Hook's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
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 04/24 and only about 1 year in 10 sees frost after that.
Marcus Hook against the rest of the dataset
About 209 days separate Marcus Hook's last and first frost, putting it 15,257 of 40,283 ZIP codes nationally. Within PA, it ranks 91 of 2,088.
Learn more
Two guides worth reading on 19061: local microclimates, on what one yard in Marcus Hook can differ from the 19061 normal, and zone vs. frost date, on why Zone 7b and Marcus Hook's frost date answer different questions.