Leonardtown, MD 20686 Frost Dates
When can you plant in Leonardtown, MD?
The last spring frost here typically falls around 03/30, about 214 days from today. The first fall frost typically arrives around 11/14, about 229 frost-free days later.
Leonardtown 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
About 11 weeks of growing season left in Leonardtown before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/30 isn't a guarantee
03/30 is the middle of 30 years of NOAA records, not a promise. Plant by 03/14 and you're betting against frost in roughly 9 years out of 10. 04/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Leonardtown compares
About 229 days separate Leonardtown's last and first frost, putting it 10,579 of 40,283 ZIP codes nationally. Within MD, it ranks 92 of 583.
Learn more
local microclimates covers what one yard in Leonardtown can differ from the 20686 normal. zone vs. frost date covers why Zone 8a and Leonardtown's frost date answer different questions.