Ridley Park, PA 19078 Frost Dates
When can you plant in Ridley Park, PA?
Typically, the last spring freeze lands around 04/02, roughly 217 days out. The first fall frost typically arrives around 11/10, about 224 frost-free days later.
The USDA Plant Hardiness Zone Map puts Ridley Park in Zone 8a (10 to 15°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 11 weeks of growing season left in Ridley Park before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/02 isn't a guarantee
04/02 is the middle of 30 years of NOAA records, not a promise. Plant by 03/19 and you're betting against frost in roughly 9 years out of 10. 04/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ridley Park compares
About 224 days separate Ridley Park's last and first frost, putting it 11,817 of 40,283 ZIP codes nationally. Within PA, it ranks 11 of 2,088.
Learn more
the frost range covers how to read the range around Ridley Park's dates instead of trusting one. local microclimates covers what one yard in Ridley Park can differ from the 19078 normal.