Birdsboro, PA 19518 Frost Dates
19518, near Birdsboro, PA: the frost window
The last spring frost here typically falls around 04/20, about 235 days from today. Fall's first freeze usually shows up around 10/23, roughly 186 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Birdsboro in Zone 7a (0 to 5°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
Birdsboro's growing season runs out in roughly 8 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 Birdsboro's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Birdsboro against the rest of the dataset
At roughly 186 frost-free days, Birdsboro places 22,777 of 40,283 ZIP codes in this dataset. Within PA, it ranks 648 of 2,088.
Learn more
Two guides worth reading on 19518: local microclimates, on what one yard in Birdsboro can differ from the 19518 normal, and zone vs. frost date, on why Zone 7a and Birdsboro's frost date answer different questions.