St. Michaels, MD 21624 Frost Dates
Frost dates for St. Michaels, MD, ZIP 21624
The last spring frost here typically falls around 04/01, about 216 days from today. The first fall frost typically arrives around 11/07, about 220 frost-free days later.
St. Michaels sits in USDA Zone 8a (10 to 15°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 8a around St. Michaels 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
04/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/18 and you're betting against frost in roughly 9 years out of 10. 04/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How St. Michaels compares
About 220 days separate St. Michaels's last and first frost, putting it 12,856 of 40,283 ZIP codes nationally. Within MD, it ranks 182 of 583.
Learn more
local microclimates explains what one yard in St. Michaels can differ from the 21624 normal, and zone vs. frost date explains why Zone 8a and St. Michaels's frost date answer different questions.