Millheim, PA 16854 Frost Dates
When can you plant in Millheim, PA?
Typically, the last spring freeze lands around 04/25, roughly 240 days out. The first fall frost typically arrives around 10/19, about 175 frost-free days later.
Millheim sits in USDA Zone 6b (-5 to 0°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
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.
The actual range around Millheim's last frost
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 27,113 of 40,283 ZIP codes nationally. Within PA, it ranks 1,228 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.