North Wales, PA 19429 Frost Dates
Frost dates for North Wales, PA, ZIP 19429
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.
North Wales sits in USDA Zone 7b (5 to 10°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.
What to do before the first frost
Zone 7b around North Wales has about 7 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.
How much risk comes with planting early here
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 North Wales compares
About 173 days separate North Wales's last and first frost, putting it 27,897 of 40,283 ZIP codes nationally. Within PA, it ranks 1,324 of 2,088.
Learn more
local microclimates explains what one yard in North Wales can differ from the 19429 normal, and zone vs. frost date explains why Zone 7b and North Wales's frost date answer different questions.