Milford, PA 18371 Frost Dates
Frost dates for Milford, PA, ZIP 18371
Typically, the last spring freeze lands around 05/05, roughly 250 days out. The first fall frost typically arrives around 10/10, about 158 frost-free days later.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Milford, not a forecast for this year.
What to do before the first frost
Zone 6b around Milford has about 6 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.
Why 05/05 isn't a guarantee
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/22 and you're betting against frost in roughly 9 years out of 10. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Milford compares
About 158 days separate Milford's last and first frost, putting it 33,060 of 40,283 ZIP codes nationally. Within PA, it ranks 1,748 of 2,088.
Learn more
the frost range explains how to read the range around Milford's dates instead of trusting one, and local microclimates explains what one yard in Milford can differ from the 18371 normal.