North Wales, PA 19450 Frost Dates
Frost dates for North Wales, PA, ZIP 19450
Typically, the last spring freeze lands around 04/24, roughly 239 days out. The first fall frost typically arrives around 10/15, about 173 frost-free days later.
North Wales 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.
What to do before the first frost
Zone 7a 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.
The actual range around North Wales's last frost
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
North Wales's growing season runs about 173 days, ranking 27,899 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,326 of 2,088.
Learn more
local microclimates explains what one yard in North Wales can differ from the 19450 normal, and zone vs. frost date explains why Zone 7a and North Wales's frost date answer different questions.