East Petersburg, PA 17606 Frost Dates
Frost dates for East Petersburg, PA, ZIP 17606
Typically, the last spring freeze lands around 04/18, roughly 233 days out. The first fall frost typically arrives around 10/25, about 186 frost-free days later.
The USDA Plant Hardiness Zone Map puts East Petersburg in Zone 7a (0 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
Zone 7a around East Petersburg 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.
The actual range around East Petersburg's last frost
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How East Petersburg compares
At roughly 186 frost-free days, East Petersburg places 22,786 of 40,283 ZIP codes in this dataset. Within PA, it ranks 653 of 2,088.
Learn more
zone vs. frost date explains why Zone 7a and East Petersburg's frost date answer different questions, and the frost range explains how to read the range around East Petersburg's dates instead of trusting one.