Myerstown, PA 19550 Frost Dates
Myerstown, PA: when does the frost end?
Around 04/20 is the usual last spring frost, about 235 days away. Fall's first freeze usually shows up around 10/25, roughly 185 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 Myerstown, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Myerstown's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Myerstown'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 05/07 and only about 1 year in 10 sees frost after that.
Myerstown against the rest of the dataset
At roughly 185 frost-free days, Myerstown places 23,163 of 40,283 ZIP codes in this dataset. Within PA, it ranks 699 of 2,088.
Learn more
Before leaning on 19550's figures: local microclimates explains what one yard in Myerstown can differ from the 19550 normal, while zone vs. frost date explains why Zone 7a and Myerstown's frost date answer different questions.