Kitzmiller, MD 21561 Frost Dates
Kitzmiller, MD: when does the frost end?
Around 04/29 is the usual last spring frost, about 244 days away. Fall's first freeze usually shows up around 10/20, roughly 174 days after the last spring frost.
Zone 6a (-10 to -5°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 Kitzmiller, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Kitzmiller'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
04/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Kitzmiller against the rest of the dataset
At roughly 174 frost-free days, Kitzmiller places 27,621 of 40,283 ZIP codes in this dataset. Within MD, it ranks 569 of 583.
Learn more
Before leaning on 21561's figures: local microclimates explains what one yard in Kitzmiller can differ from the 21561 normal, while zone vs. frost date explains why Zone 6a and Kitzmiller's frost date answer different questions.