Forest Heights, MD 22307 Frost Dates
Forest Heights, MD: when does the frost end?
The last spring frost here typically falls around 04/03, about 218 days from today. Fall's first freeze usually shows up around 11/08, roughly 217 days after the last spring frost.
Forest 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
With roughly 10 weeks until Forest Heights's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/03 isn't a guarantee
04/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/15 and only about 1 year in 10 sees frost after that.
Forest Heights against the rest of the dataset
At roughly 217 frost-free days, Forest Heights places 13,505 of 40,283 ZIP codes in this dataset. Within MD, it ranks 304 of 583.
Learn more
Before leaning on 22307's figures: the frost range explains how to read the range around Forest Heights's dates instead of trusting one, while local microclimates explains what one yard in Forest Heights can differ from the 22307 normal.