Sykesville, MD 21117 Frost Dates
Frost dates for Sykesville, MD, ZIP 21117
The last spring frost here typically falls around 04/02, about 217 days from today. The first fall frost typically arrives around 11/07, about 220 frost-free days later.
The USDA Plant Hardiness Zone Map puts Sykesville in Zone 7a (0 to 5°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 7a around Sykesville 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.
How much risk comes with planting early here
04/02 is the middle of 30 years of NOAA records, not a promise. Plant by 03/20 and you're betting against frost in roughly 9 years out of 10. 04/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sykesville compares
About 220 days separate Sykesville's last and first frost, putting it 12,801 of 40,283 ZIP codes nationally. Within MD, it ranks 176 of 583.
Learn more
local microclimates explains what one yard in Sykesville can differ from the 21117 normal, and zone vs. frost date explains why Zone 7a and Sykesville's frost date answer different questions.