Marydel, MD 19964 Frost Dates
Frost dates for Marydel, MD, ZIP 19964
Around 04/04 is the usual last spring frost, about 219 days away. The first fall frost typically arrives around 11/04, about 214 frost-free days later.
Zone 7b (5 to 10°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 Marydel, not a forecast for this year.
What to do before the first frost
Zone 7b around Marydel has about 10 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.
The actual range around Marydel's last frost
04/04 is the middle of 30 years of NOAA records, not a promise. Plant by 03/22 and you're betting against frost in roughly 9 years out of 10. 04/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Marydel compares
About 214 days separate Marydel's last and first frost, putting it 14,383 of 40,283 ZIP codes nationally. Within MD, it ranks 333 of 583.
Learn more
the frost range explains how to read the range around Marydel's dates instead of trusting one, and local microclimates explains what one yard in Marydel can differ from the 19964 normal.