Delta, PA 21154 Frost Dates
When can you plant in Delta, PA?
Typically, the last spring freeze lands around 04/03, roughly 218 days out. The first fall frost typically arrives around 11/06, about 217 frost-free days later.
Delta sits in USDA Zone 7a (0 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 10 weeks of growing season left in Delta before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Delta's last frost
04/03 is the middle of 30 years of NOAA records, not a promise. Plant by 03/22 and you're betting against frost in roughly 9 years out of 10. 04/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Delta compares
At roughly 217 frost-free days, Delta places 13,583 of 40,283 ZIP codes in this dataset. Within PA, it ranks 52 of 2,088.
Learn more
the frost range covers how to read the range around Delta's dates instead of trusting one. local microclimates covers what one yard in Delta can differ from the 21154 normal.