Leonardtown, MD 20626 Frost Dates
Frost dates for Leonardtown, MD, ZIP 20626
The last spring frost here typically falls around 04/08, about 223 days from today. The first fall frost typically arrives around 10/30, about 204 frost-free days later.
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 Leonardtown, not a forecast for this year.
What to do before the first frost
Zone 8a around Leonardtown has about 9 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
04/08 is the middle of 30 years of NOAA records, not a promise. Plant by 03/26 and you're betting against frost in roughly 9 years out of 10. 04/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Leonardtown compares
Leonardtown's growing season runs about 204 days, ranking 16,580 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 373 of 583.
Learn more
local microclimates explains what one yard in Leonardtown can differ from the 20626 normal, and zone vs. frost date explains why Zone 8a and Leonardtown's frost date answer different questions.