Frostburg, MD 21528 Frost Dates
21528, near Frostburg, MD: the frost window
The last spring frost here typically falls around 04/29, about 244 days from today. Fall's first freeze usually shows up around 10/18, roughly 171 days after the last spring frost.
Zone 6b (-5 to 0°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 Frostburg, not a forecast for this year.
Stretching the season past the first frost
Frostburg's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Frostburg against the rest of the dataset
About 171 days separate Frostburg's last and first frost, putting it 28,620 of 40,283 ZIP codes nationally. Within MD, it ranks 571 of 583.
Learn more
Two guides worth reading on 21528: the frost range, on how to read the range around Frostburg's dates instead of trusting one, and local microclimates, on what one yard in Frostburg can differ from the 21528 normal.