Doylestown, PA 18901 Frost Dates
Frost dates for Doylestown, PA, ZIP 18901
Around 04/13 is the usual last spring frost, about 228 days away. The first fall frost typically arrives around 10/30, about 198 frost-free days later.
The USDA Plant Hardiness Zone Map puts Doylestown 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
Zone 7a around Doylestown has about 9 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Doylestown's last frost
04/13 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 04/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Doylestown compares
About 198 days separate Doylestown's last and first frost, putting it 18,398 of 40,283 ZIP codes nationally. Within PA, it ranks 326 of 2,088.
Learn more
local microclimates explains what one yard in Doylestown can differ from the 18901 normal, and zone vs. frost date explains why Zone 7a and Doylestown's frost date answer different questions.