Hampstead, MD 21136 Frost Dates
Hampstead, MD: when does the frost end?
Around 04/02 is the usual last spring frost, about 217 days away. Fall's first freeze usually shows up around 11/07, roughly 220 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Hampstead 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 10 weeks until Hampstead's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Hampstead's last frost
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/13 and only about 1 year in 10 sees frost after that.
Hampstead against the rest of the dataset
About 220 days separate Hampstead's last and first frost, putting it 12,792 of 40,283 ZIP codes nationally. Within MD, it ranks 173 of 583.
Learn more
Before leaning on 21136's figures: the frost range explains how to read the range around Hampstead's dates instead of trusting one, while local microclimates explains what one yard in Hampstead can differ from the 21136 normal.