Schwenksville, PA 19478 Frost Dates
When can you plant in Schwenksville, PA?
Around 04/24 is the usual last spring frost, about 239 days away. The first fall frost typically arrives around 10/15, about 173 frost-free days later.
The USDA Plant Hardiness Zone Map puts Schwenksville in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 7 weeks of growing season left in Schwenksville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/24 isn't a guarantee
04/24 is the middle of 30 years of NOAA records, not a promise. Plant by 04/10 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Schwenksville compares
About 173 days separate Schwenksville's last and first frost, putting it 27,969 of 40,283 ZIP codes nationally. Within PA, it ranks 1,335 of 2,088.
Learn more
local microclimates covers what one yard in Schwenksville can differ from the 19478 normal. zone vs. frost date covers why Zone 7a and Schwenksville's frost date answer different questions.