College Park, MD 20904 Frost Dates
Frost dates for College Park, MD, ZIP 20904
The last spring frost here typically falls around 04/10, about 225 days from today. The first fall frost typically arrives around 11/01, about 202 frost-free days later.
The USDA Plant Hardiness Zone Map puts College Park in Zone 7b (5 to 10°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
Zone 7b around College Park 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
04/10 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. 05/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How College Park compares
About 202 days separate College Park's last and first frost, putting it 17,130 of 40,283 ZIP codes nationally. Within MD, it ranks 416 of 583.
Learn more
local microclimates explains what one yard in College Park can differ from the 20904 normal, and zone vs. frost date explains why Zone 7b and College Park's frost date answer different questions.