Berlin, MD 21841 Frost Dates
Berlin, MD: when does the frost end?
Typically, the last spring freeze lands around 04/10, roughly 225 days out. Fall's first freeze usually shows up around 10/31, roughly 202 days after the last spring frost.
Zone 7b (5 to 10°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 Berlin, not a forecast for this year.
Stretching the season past the first frost
With roughly 9 weeks until Berlin's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/10 isn't a guarantee
04/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/28 and only about 1 year in 10 sees frost after that.
Berlin against the rest of the dataset
At roughly 202 frost-free days, Berlin places 17,227 of 40,283 ZIP codes in this dataset. Within MD, it ranks 424 of 583.
Learn more
Before leaning on 21841's figures: local microclimates explains what one yard in Berlin can differ from the 21841 normal, while zone vs. frost date explains why Zone 7b and Berlin's frost date answer different questions.