Sykesville, MD 21104 Frost Dates
Frost dates for Sykesville, MD, ZIP 21104
Around 04/02 is the usual last spring frost, about 217 days away. The first fall frost typically arrives around 11/07, about 220 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 Sykesville, not a forecast for this year.
What to do before the first frost
Zone 7b 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.
The actual range around Sykesville's last frost
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
Sykesville's growing season runs about 220 days, ranking 12,800 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 175 of 583.
Learn more
the frost range explains how to read the range around Sykesville's dates instead of trusting one, and local microclimates explains what one yard in Sykesville can differ from the 21104 normal.