Lonaconing, MD 21557 Frost Dates
Lonaconing, MD: when does the frost end?
Typically, the last spring freeze lands around 04/30, roughly 245 days out. Fall's first freeze usually shows up around 10/15, roughly 167 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Lonaconing in Zone 7a (0 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.
How much risk comes with planting early here
04/30 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 05/19 and only about 1 year in 10 sees frost after that.
Lonaconing against the rest of the dataset
Lonaconing's growing season runs about 167 days, ranking 30,084 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 577 of 583.
Learn more
Before leaning on 21557's figures: local microclimates explains what one yard in Lonaconing can differ from the 21557 normal, while zone vs. frost date explains why Zone 7a and Lonaconing's frost date answer different questions.