Millheim, PA 16832 Frost Dates
When can you plant in Millheim, PA?
Around 04/25 is the usual last spring frost, about 240 days away. The first fall frost typically arrives around 10/19, about 175 frost-free days later.
The USDA Plant Hardiness Zone Map puts Millheim 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
About 7 weeks of growing season left in Millheim before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/25 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Millheim compares
About 175 days separate Millheim's last and first frost, putting it 27,111 of 40,283 ZIP codes nationally. Within PA, it ranks 1,226 of 2,088.
Learn more
zone vs. frost date covers why Zone 6b and Millheim's frost date answer different questions. the frost range covers how to read the range around Millheim's dates instead of trusting one.