Lyons, PA 19511 Frost Dates
19511, near Lyons, PA: the frost window
Around 04/10 is the usual last spring frost, about 225 days away. Fall's first freeze usually shows up around 10/31, roughly 202 days after the last spring frost.
Zone 7a (0 to 5°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 Lyons, not a forecast for this year.
Stretching the season past the first frost
Lyons'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.
The actual range around Lyons's last frost
04/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/29 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/26 and only about 1 year in 10 sees frost after that.
Lyons against the rest of the dataset
At roughly 202 frost-free days, Lyons places 17,337 of 40,283 ZIP codes in this dataset. Within PA, it ranks 233 of 2,088.
Learn more
Two guides worth reading on 19511: local microclimates, on what one yard in Lyons can differ from the 19511 normal, and zone vs. frost date, on why Zone 7a and Lyons's frost date answer different questions.