Leonardtown, MD 20656 Frost Dates
Leonardtown, MD: when does the frost end?
Around 04/17 is the usual last spring frost, about 232 days away. Fall's first freeze usually shows up around 10/27, roughly 195 days after the last spring frost.
Leonardtown 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 Leonardtown's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Leonardtown's last frost
04/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/02 and only about 1 year in 10 sees frost after that.
Leonardtown against the rest of the dataset
At roughly 195 frost-free days, Leonardtown places 19,254 of 40,283 ZIP codes in this dataset. Within MD, it ranks 511 of 583.
Learn more
Before leaning on 20656's figures: zone vs. frost date explains why Zone 7b and Leonardtown's frost date answer different questions, while the frost range explains how to read the range around Leonardtown's dates instead of trusting one.