Wyomissing, PA 19609 Frost Dates
Wyomissing, PA: when does the frost end?
Around 04/14 is the usual last spring frost, about 229 days away. Fall's first freeze usually shows up around 10/29, roughly 197 days after the last spring frost.
Wyomissing sits in USDA Zone 7a (0 to 5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 9 weeks until Wyomissing's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Wyomissing's last frost
04/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
Wyomissing against the rest of the dataset
At roughly 197 frost-free days, Wyomissing places 18,644 of 40,283 ZIP codes in this dataset. Within PA, it ranks 356 of 2,088.
Learn more
Before leaning on 19609's figures: zone vs. frost date explains why Zone 7a and Wyomissing's frost date answer different questions, while the frost range explains how to read the range around Wyomissing's dates instead of trusting one.