College Park, MD 20705 Frost Dates
College Park, MD: when does the frost end?
Around 04/10 is the usual last spring frost, about 225 days away. Fall's first freeze usually shows up around 11/01, 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 College Park, not a forecast for this year.
Stretching the season past the first frost
With roughly 9 weeks until College Park'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 05/01 and only about 1 year in 10 sees frost after that.
College Park against the rest of the dataset
At roughly 202 frost-free days, College Park places 17,128 of 40,283 ZIP codes in this dataset. Within MD, it ranks 414 of 583.
Learn more
Before leaning on 20705's figures: local microclimates explains what one yard in College Park can differ from the 20705 normal, while zone vs. frost date explains why Zone 7b and College Park's frost date answer different questions.