Manchester, MD 21102 Frost Dates
Manchester, MD: when does the frost end?
Around 04/19 is the usual last spring frost, about 234 days away. Fall's first freeze usually shows up around 10/25, roughly 188 days after the last spring frost.
Manchester sits in USDA Zone 7a (0 to 5°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 8 weeks until Manchester's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/19 isn't a guarantee
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/08 and only about 1 year in 10 sees frost after that.
Manchester against the rest of the dataset
At roughly 188 frost-free days, Manchester places 21,984 of 40,283 ZIP codes in this dataset. Within MD, it ranks 532 of 583.
Learn more
Before leaning on 21102's figures: local microclimates explains what one yard in Manchester can differ from the 21102 normal, while zone vs. frost date explains why Zone 7a and Manchester's frost date answer different questions.