St. Michaels, MD 21647 Frost Dates
St. Michaels, MD: when does the frost end?
The last spring frost here typically falls around 04/01, about 216 days from today. Fall's first freeze usually shows up around 11/07, roughly 220 days after the last spring frost.
Zone 8a (10 to 15°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for St. Michaels, not a forecast for this year.
Stretching the season past the first frost
With roughly 10 weeks until St. Michaels's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around St. Michaels's last frost
04/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/15 and only about 1 year in 10 sees frost after that.
St. Michaels against the rest of the dataset
About 220 days separate St. Michaels's last and first frost, putting it 12,857 of 40,283 ZIP codes nationally. Within MD, it ranks 183 of 583.
Learn more
Before leaning on 21647's figures: local microclimates explains what one yard in St. Michaels can differ from the 21647 normal, while zone vs. frost date explains why Zone 8a and St. Michaels's frost date answer different questions.