Lonaconing, MD 21539 Frost Dates
Lonaconing, MD: when does the frost end?
Around 04/29 is the usual last spring frost, about 244 days away. Fall's first freeze usually shows up around 10/18, roughly 171 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Lonaconing in Zone 6a (-10 to -5°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 7 weeks until Lonaconing's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/29 isn't a guarantee
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.
Lonaconing against the rest of the dataset
At roughly 171 frost-free days, Lonaconing places 28,732 of 40,283 ZIP codes in this dataset. Within MD, it ranks 574 of 583.
Learn more
Before leaning on 21539's figures: the frost range explains how to read the range around Lonaconing's dates instead of trusting one, while local microclimates explains what one yard in Lonaconing can differ from the 21539 normal.