Fairmount Heights, MD 20019 Frost Dates
20019, near Fairmount Heights, MD: the frost window
The last spring frost here typically falls around 03/29, about 213 days from today. Fall's first freeze usually shows up around 11/08, roughly 224 days after the last spring frost.
Fairmount Heights sits in USDA Zone 8a (10 to 15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Fairmount Heights'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.
How much risk comes with planting early here
03/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/11 and only about 1 year in 10 sees frost after that.
Fairmount Heights against the rest of the dataset
Fairmount Heights's growing season runs about 224 days, ranking 11,915 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 128 of 583.
Learn more
Two guides worth reading on 20019: local microclimates, on what one yard in Fairmount Heights can differ from the 20019 normal, and zone vs. frost date, on why Zone 8a and Fairmount Heights's frost date answer different questions.