Mill Creek, PA 17060 Frost Dates
Frost dates for Mill Creek, PA, ZIP 17060
The last spring frost here typically falls around 04/21, about 236 days from today. The first fall frost typically arrives around 10/24, about 185 frost-free days later.
The USDA Plant Hardiness Zone Map puts Mill Creek in Zone 6b (-5 to 0°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 6b around Mill Creek has about 8 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
04/21 is the middle of 30 years of NOAA records, not a promise. Plant by 04/06 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 Mill Creek compares
About 185 days separate Mill Creek's last and first frost, putting it 23,322 of 40,283 ZIP codes nationally. Within PA, it ranks 735 of 2,088.
Learn more
zone vs. frost date explains why Zone 6b and Mill Creek's frost date answer different questions, and the frost range explains how to read the range around Mill Creek's dates instead of trusting one.