Chevy Chase, MD 20815 Frost Dates
Chevy Chase, MD: when does the frost end?
Typically, the last spring freeze lands around 04/09, roughly 224 days out. Fall's first freeze usually shows up around 10/31, roughly 202 days after the last spring frost.
Chevy Chase sits in USDA Zone 7b (5 to 10°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
With roughly 9 weeks until Chevy Chase'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
04/09 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 04/26 and only about 1 year in 10 sees frost after that.
Chevy Chase against the rest of the dataset
About 202 days separate Chevy Chase's last and first frost, putting it 17,240 of 40,283 ZIP codes nationally. Within MD, it ranks 425 of 583.
Learn more
Before leaning on 20815's figures: local microclimates explains what one yard in Chevy Chase can differ from the 20815 normal, while zone vs. frost date explains why Zone 7b and Chevy Chase's frost date answer different questions.