West Conshohocken, PA 19010 Frost Dates
Frost dates for West Conshohocken, PA, ZIP 19010
Typically, the last spring freeze lands around 04/08, roughly 223 days out. The first fall frost typically arrives around 10/31, about 203 frost-free days later.
The USDA Plant Hardiness Zone Map puts West Conshohocken in Zone 7b (5 to 10°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 7b around West Conshohocken 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.
How much risk comes with planting early here
04/08 is the middle of 30 years of NOAA records, not a promise. Plant by 03/28 and you're betting against frost in roughly 9 years out of 10. 04/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How West Conshohocken compares
At roughly 203 frost-free days, West Conshohocken places 16,947 of 40,283 ZIP codes in this dataset. Within PA, it ranks 211 of 2,088.
Learn more
local microclimates explains what one yard in West Conshohocken can differ from the 19010 normal, and zone vs. frost date explains why Zone 7b and West Conshohocken's frost date answer different questions.