Leonardtown, MD 20615 Frost Dates
When can you plant in Leonardtown, MD?
Typically, the last spring freeze lands around 03/22, roughly 206 days out. The first fall frost typically arrives around 11/26, about 248 frost-free days later.
The USDA Plant Hardiness Zone Map puts Leonardtown in Zone 8a (10 to 15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 13 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.
The actual range around Leonardtown's last frost
03/22 is the middle of 30 years of NOAA records, not a promise. Plant by 03/06 and you're betting against frost in roughly 9 years out of 10. 04/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Leonardtown compares
Leonardtown's growing season runs about 248 days, ranking 7,696 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 3 of 583.
Learn more
local microclimates covers what one yard in Leonardtown can differ from the 20615 normal. zone vs. frost date covers why Zone 8a and Leonardtown's frost date answer different questions.