Perryville, MD 21903 Frost Dates
When can you plant in Perryville, MD?
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.
The USDA Plant Hardiness Zone Map puts Perryville in Zone 7b (5 to 10°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 10 weeks of growing season left in Perryville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/03 isn't a guarantee
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 Perryville compares
About 217 days separate Perryville's last and first frost, putting it 13,467 of 40,283 ZIP codes nationally. Within MD, it ranks 289 of 583.
Learn more
zone vs. frost date covers why Zone 7b and Perryville's frost date answer different questions. the frost range covers how to read the range around Perryville's dates instead of trusting one.