Big Run, PA 15715 Frost Dates
When can you plant in Big Run, PA?
Typically, the last spring freeze lands around 05/06, roughly 251 days out. The first fall frost typically arrives around 10/14, about 160 frost-free days later.
The USDA Plant Hardiness Zone Map puts Big Run in Zone 6a (-10 to -5°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 Big Run before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Big Run's last frost
05/06 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. 05/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Big Run compares
Big Run's growing season runs about 160 days, ranking 32,473 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,712 of 2,088.
Learn more
zone vs. frost date covers why Zone 6a and Big Run's frost date answer different questions. the frost range covers how to read the range around Big Run's dates instead of trusting one.