Laurel, MD 20759 Frost Dates
20759, near Laurel, MD: the frost window
Typically, the last spring freeze lands around 04/05, roughly 220 days out. Fall's first freeze usually shows up around 11/09, roughly 218 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Laurel in Zone 7b (5 to 10°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
Laurel's growing season runs out in roughly 10 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 Laurel's last frost
04/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/19 and only about 1 year in 10 sees frost after that.
Laurel against the rest of the dataset
Laurel's growing season runs about 218 days, ranking 13,200 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 250 of 583.
Learn more
Two guides worth reading on 20759: local microclimates, on what one yard in Laurel can differ from the 20759 normal, and zone vs. frost date, on why Zone 7b and Laurel's frost date answer different questions.