Barnesville, MD 20838 Frost Dates
20838, near Barnesville, MD: the frost window
Typically, the last spring freeze lands around 04/14, roughly 229 days out. Fall's first freeze usually shows up around 10/29, roughly 196 days after the last spring frost.
Zone 7a (0 to 5°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 Barnesville, not a forecast for this year.
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.
The actual range around Barnesville's last frost
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
About 196 days separate Barnesville's last and first frost, putting it 19,107 of 40,283 ZIP codes nationally. Within MD, it ranks 495 of 583.
Learn more
Two guides worth reading on 20838: the frost range, on how to read the range around Barnesville's dates instead of trusting one, and local microclimates, on what one yard in Barnesville can differ from the 20838 normal.