Princess Anne, MD 21871 Frost Dates
Frost dates for Princess Anne, MD, ZIP 21871
Typically, the last spring freeze lands around 03/31, roughly 215 days out. The first fall frost typically arrives around 11/11, about 225 frost-free days later.
The USDA Plant Hardiness Zone Map puts Princess Anne 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
Zone 7b around Princess Anne has about 11 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.
How much risk comes with planting early here
03/31 is the middle of 30 years of NOAA records, not a promise. Plant by 03/17 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 Princess Anne compares
At roughly 225 frost-free days, Princess Anne places 11,413 of 40,283 ZIP codes in this dataset. Within MD, it ranks 112 of 583.
Learn more
the frost range explains how to read the range around Princess Anne's dates instead of trusting one, and local microclimates explains what one yard in Princess Anne can differ from the 21871 normal.