Leonardtown, MD 20619 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.
Leonardtown sits in USDA Zone 7b (5 to 10°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 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.
How much risk comes with planting early here
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
About 248 days separate Leonardtown's last and first frost, putting it 7,697 of 40,283 ZIP codes nationally. Within MD, it ranks 4 of 583.
Learn more
the frost range covers how to read the range around Leonardtown's dates instead of trusting one. local microclimates covers what one yard in Leonardtown can differ from the 20619 normal.