Clearfield, PA 16821 Frost Dates
When can you plant in Clearfield, PA?
Typically, the last spring freeze lands around 05/04, roughly 249 days out. The first fall frost typically arrives around 10/11, about 161 frost-free days later.
Clearfield sits in USDA Zone 6a (-10 to -5°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 6 weeks of growing season left in Clearfield 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
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/19 and you're betting against frost in roughly 9 years out of 10. 05/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Clearfield compares
Clearfield's growing season runs about 161 days, ranking 32,020 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,672 of 2,088.
Learn more
zone vs. frost date covers why Zone 6a and Clearfield's frost date answer different questions. the frost range covers how to read the range around Clearfield's dates instead of trusting one.