Hagerstown, MD 21767 Frost Dates
Frost dates for Hagerstown, MD, ZIP 21767
Around 04/07 is the usual last spring frost, about 222 days away. The first fall frost typically arrives around 11/04, about 209 frost-free days later.
Hagerstown 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
Zone 7a around Hagerstown has about 10 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
04/07 is the middle of 30 years of NOAA records, not a promise. Plant by 03/25 and you're betting against frost in roughly 9 years out of 10. 04/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hagerstown compares
At roughly 209 frost-free days, Hagerstown places 15,144 of 40,283 ZIP codes in this dataset. Within MD, it ranks 337 of 583.
Learn more
local microclimates explains what one yard in Hagerstown can differ from the 21767 normal, and zone vs. frost date explains why Zone 7a and Hagerstown's frost date answer different questions.