Glen Echo, MD 20818 Frost Dates
When can you plant in Glen Echo, MD?
Around 04/09 is the usual last spring frost, about 224 days away. The first fall frost typically arrives around 10/31, about 202 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 Glen Echo, not a forecast for this year.
What to do before the first frost
About 9 weeks of growing season left in Glen Echo before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Glen Echo's last frost
04/09 is the middle of 30 years of NOAA records, not a promise. Plant by 03/27 and you're betting against frost in roughly 9 years out of 10. 04/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Glen Echo compares
At roughly 202 frost-free days, Glen Echo places 17,357 of 40,283 ZIP codes in this dataset. Within MD, it ranks 439 of 583.
Learn more
local microclimates covers what one yard in Glen Echo can differ from the 20818 normal. zone vs. frost date covers why Zone 7b and Glen Echo's frost date answer different questions.