St. Michaels, MD 21665 Frost Dates
St. Michaels, MD: when does the frost end?
Around 04/01 is the usual last spring frost, about 216 days away. Fall's first freeze usually shows up around 11/07, roughly 220 days after the last spring frost.
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.
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
St. Michaels's growing season runs about 220 days, ranking 12,861 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 187 of 583.
Learn more
Before leaning on 21665's figures: zone vs. frost date explains why Zone 8a and St. Michaels's frost date answer different questions, while the frost range explains how to read the range around St. Michaels's dates instead of trusting one.