Barnesville, MD 21710 Frost Dates
Barnesville, MD: when does the frost end?
Typically, the last spring freeze lands around 04/02, roughly 217 days out. Fall's first freeze usually shows up around 11/06, roughly 218 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Barnesville in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 10 weeks until Barnesville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/02 isn't a guarantee
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/15 and only about 1 year in 10 sees frost after that.
Barnesville against the rest of the dataset
At roughly 218 frost-free days, Barnesville places 13,352 of 40,283 ZIP codes in this dataset. Within MD, it ranks 272 of 583.
Learn more
Before leaning on 21710's figures: local microclimates explains what one yard in Barnesville can differ from the 21710 normal, while zone vs. frost date explains why Zone 7b and Barnesville's frost date answer different questions.