Brookeville, MD 20777 Frost Dates
Frost dates for Brookeville, MD, ZIP 20777
Around 04/05 is the usual last spring frost, about 220 days away. The first fall frost typically arrives around 11/09, about 218 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 Brookeville, not a forecast for this year.
What to do before the first frost
Zone 7b around Brookeville 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
04/05 is the middle of 30 years of NOAA records, not a promise. Plant by 03/21 and you're betting against frost in roughly 9 years out of 10. 04/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Brookeville compares
At roughly 218 frost-free days, Brookeville places 13,344 of 40,283 ZIP codes in this dataset. Within MD, it ranks 265 of 583.
Learn more
zone vs. frost date explains why Zone 7b and Brookeville's frost date answer different questions, and the frost range explains how to read the range around Brookeville's dates instead of trusting one.