Barnesville, MD 20841 Frost Dates
20841, near Barnesville, MD: the frost window
Around 04/14 is the usual last spring frost, about 229 days away. Fall's first freeze usually shows up around 10/29, roughly 196 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
Barnesville's growing season runs out in roughly 9 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
04/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/02 and only about 1 year in 10 sees frost after that.
Barnesville against the rest of the dataset
At roughly 196 frost-free days, Barnesville places 19,108 of 40,283 ZIP codes in this dataset. Within MD, it ranks 496 of 583.
Learn more
Two guides worth reading on 20841: local microclimates, on what one yard in Barnesville can differ from the 20841 normal, and zone vs. frost date, on why Zone 7b and Barnesville's frost date answer different questions.